156312512643640 has 32 divisors (see below), whose sum is σ = 372391574240880. Its totient is φ = 58847063583232.

The previous prime is 156312512643601. The next prime is 156312512643643. The reversal of 156312512643640 is 46346215213651.

It is a happy number.

It is a super-2 number, since 2×156312512643640² (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 (156312512643643) 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, 114935670382 + ... + 114935671741.

Almost surely, 2^{156312512643640} is an apocalyptic number.

156312512643640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156312512643640 is an abundant number, since it is smaller than the sum of its proper divisors (216079061597240).

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

156312512643640 is a wasteful number, since it uses less digits than its factorization.

156312512643640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229871342151 (or 229871342147 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 156312512643640 in words is "one hundred fifty-six trillion, three hundred twelve billion, five hundred twelve million, six hundred forty-three thousand, six hundred forty".