156245805240 has 256 divisors, whose sum is σ = 591874283520. Its totient is φ = 32151060480.

The previous prime is 156245805239. The next prime is 156245805251. The reversal of 156245805240 is 42508542651.

It is a super-2 number, since 2×156245805240² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 156245805192 and 156245805201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90580 + ... + 566300.

It is an arithmetic number, because the mean of its divisors is an integer number (2312008920).

Almost surely, 2^156245805240 is an apocalyptic number.

156245805240 is a gapful number since it is divisible by the number (10) 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 156245805240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295937141760).

156245805240 is an abundant number, since it is smaller than the sum of its proper divisors (435628478280).

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

156245805240 is a wasteful number, since it uses less digits than its factorization.

156245805240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475782 (or 475778 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 156245805240 in words is "one hundred fifty-six billion, two hundred forty-five million, eight hundred five thousand, two hundred forty".