156172000100 has 18 divisors (see below), whose sum is σ = 338893240434. Its totient is φ = 62468800000.

The previous prime is 156172000081. The next prime is 156172000123. The reversal of 156172000100 is 1000271651.

It can be written as a sum of positive squares in 3 ways, for example, as 30101556004 + 126070444096 = 173498^2 + 355064^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 780859901 + ... + 780860100.

Almost surely, 2^156172000100 is an apocalyptic number.

156172000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156172000100 is an abundant number, since it is smaller than the sum of its proper divisors (182721240334).

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

156172000100 is a wasteful number, since it uses less digits than its factorization.

156172000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561720015 (or 1561720008 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

Adding to 156172000100 its reverse (1000271651), we get a palindrome (157172271751).

The spelling of 156172000100 in words is "one hundred fifty-six billion, one hundred seventy-two million, one hundred", and thus it is an aban number.