145427538685 has 48 divisors (see below), whose sum is σ = 206882202240. Its totient is φ = 97484745600.

The previous prime is 145427538647. The next prime is 145427538689. The reversal of 145427538685 is 586835724541.

It is not a de Polignac number, because 145427538685 - 2²⁷ = 145293320957 is a prime.

It is a super-2 number, since 2×145427538685² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145427538689) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5421336 + ... + 5448094.

It is an arithmetic number, because the mean of its divisors is an integer number (4310045880).

Almost surely, 2^145427538685 is an apocalyptic number.

It is an amenable number.

145427538685 is a deficient number, since it is larger than the sum of its proper divisors (61454663555).

145427538685 is a wasteful number, since it uses less digits than its factorization.

145427538685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27490 (or 27479 counting only the distinct ones).

The product of its digits is 32256000, while the sum is 58.

The spelling of 145427538685 in words is "one hundred forty-five billion, four hundred twenty-seven million, five hundred thirty-eight thousand, six hundred eighty-five".