156541980672 has 832 divisors, whose sum is σ = 597866987520. Its totient is φ = 39282278400.

The previous prime is 156541980629. The next prime is 156541980689. The reversal of 156541980672 is 276089145651.

It is a happy number.

156541980672 is a `hidden beast` number, since 1 + 5 + 6 + 541 + 98 + 0 + 6 + 7 + 2 = 666.

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

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, 263982808 + ... + 263983400.

Almost surely, 2^156541980672 is an apocalyptic number.

156541980672 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 156541980672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298933493760).

156541980672 is an abundant number, since it is smaller than the sum of its proper divisors (441325006848).

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

156541980672 is a wasteful number, since it uses less digits than its factorization.

156541980672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 156541980672 in words is "one hundred fifty-six billion, five hundred forty-one million, nine hundred eighty thousand, six hundred seventy-two".