149997651552 has 384 divisors, whose sum is σ = 525305088000. Its totient is φ = 40712398848.

The previous prime is 149997651547. The next prime is 149997651589. The reversal of 149997651552 is 255156799941.

149997651552 is a `hidden beast` number, since 1 + 4 + 9 + 9 + 9 + 76 + 5 + 1 + 552 = 666.

It is a super-2 number, since 2×149997651552² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 149997651552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20722878 + ... + 20730114.

It is an arithmetic number, because the mean of its divisors is an integer number (1367982000).

Almost surely, 2^149997651552 is an apocalyptic number.

149997651552 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 149997651552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262652544000).

149997651552 is an abundant number, since it is smaller than the sum of its proper divisors (375307436448).

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

149997651552 is a wasteful number, since it uses less digits than its factorization.

149997651552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7435 (or 7421 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 63.

The spelling of 149997651552 in words is "one hundred forty-nine billion, nine hundred ninety-seven million, six hundred fifty-one thousand, five hundred fifty-two".