156214774081 has 8 divisors (see below), whose sum is σ = 160602609384. Its totient is φ = 151854449280.

The previous prime is 156214774049. The next prime is 156214774127. The reversal of 156214774081 is 180477412651.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 281400625 + 155933373456 = 16775^2 + 394884^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156214774081 - 2⁵ = 156214774049 is a prime.

It is a super-2 number, since 2×156214774081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156214774381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6866110 + ... + 6888823.

It is an arithmetic number, because the mean of its divisors is an integer number (20075326173).

Almost surely, 2^156214774081 is an apocalyptic number.

It is an amenable number.

156214774081 is a deficient number, since it is larger than the sum of its proper divisors (4387835303).

156214774081 is a wasteful number, since it uses less digits than its factorization.

156214774081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13755251.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 156214774081 in words is "one hundred fifty-six billion, two hundred fourteen million, seven hundred seventy-four thousand, eighty-one".