155742269832 has 180 divisors, whose sum is σ = 449403559605. Its totient is φ = 50390455104.

The previous prime is 155742269831. The next prime is 155742269843. The reversal of 155742269832 is 238962247551.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

155742269832 is a `hidden beast` number, since 1 + 5 + 574 + 2 + 2 + 69 + 8 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 125651816676 + 30090453156 = 354474^2 + 173466^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=279054.

It is a super-2 number, since 2×155742269832² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (155742269831) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 371699719 + ... + 371700137.

Almost surely, 2^155742269832 is an apocalyptic number.

155742269832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155742269832

155742269832 is an abundant number, since it is smaller than the sum of its proper divisors (293661289773).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155742269832 is an frugal number, since it uses more digits than its factorization.

155742269832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 461 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 155742269832 in words is "one hundred fifty-five billion, seven hundred forty-two million, two hundred sixty-nine thousand, eight hundred thirty-two".