156734812890 has 48 divisors (see below), whose sum is σ = 422603502048. Its totient is φ = 41795949456.

The previous prime is 156734812889. The next prime is 156734812919. The reversal of 156734812890 is 98218437651.

156734812890 is a `hidden beast` number, since 1 + 5 + 6 + 73 + 481 + 2 + 8 + 90 = 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 23 ways as a sum of consecutive naturals, for example, 32247532 + ... + 32252391.

It is an arithmetic number, because the mean of its divisors is an integer number (8804239626).

It is a 2-persistent number, because it is pandigital, and so is 2⋅156734812890 = 313469625780, but 3⋅156734812890 = 470204438670 is not.

Almost surely, 2^156734812890 is an apocalyptic number.

156734812890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156734812890 is an abundant number, since it is smaller than the sum of its proper divisors (265868689158).

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

156734812890 is an equidigital number, since it uses as much as digits as its factorization.

156734812890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64499945 (or 64499933 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 156734812890 in words is "one hundred fifty-six billion, seven hundred thirty-four million, eight hundred twelve thousand, eight hundred ninety".