156535724073652 has 72 divisors (see below), whose sum is σ = 355027693845888. Its totient is φ = 59690328566400.

The previous prime is 156535724073643. The next prime is 156535724073653. The reversal of 156535724073652 is 256370427535651.

It is a happy number.

It is a super-2 number, since 2×156535724073652² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156535724073653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 772289049 + ... + 772491712.

It is an arithmetic number, because the mean of its divisors is an integer number (4930940192304).

Almost surely, 2^{156535724073652} is an apocalyptic number.

It is an amenable number.

156535724073652 is an abundant number, since it is smaller than the sum of its proper divisors (198491969772236).

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

156535724073652 is a wasteful number, since it uses less digits than its factorization.

156535724073652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544780837 (or 1544780828 counting only the distinct ones).

The product of its (nonzero) digits is 158760000, while the sum is 61.

The spelling of 156535724073652 in words is "one hundred fifty-six trillion, five hundred thirty-five billion, seven hundred twenty-four million, seventy-three thousand, six hundred fifty-two".