157768531290 has 192 divisors, whose sum is σ = 440203196160. Its totient is φ = 39086530560.

The previous prime is 157768531289. The next prime is 157768531301. The reversal of 157768531290 is 92135867751.

157768531290 is a `hidden beast` number, since 1 + 577 + 6 + 8 + 53 + 12 + 9 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23428764 + ... + 23435496.

It is an arithmetic number, because the mean of its divisors is an integer number (2292724980).

Almost surely, 2^157768531290 is an apocalyptic number.

157768531290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157768531290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220101598080).

157768531290 is an abundant number, since it is smaller than the sum of its proper divisors (282434664870).

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

157768531290 is a wasteful number, since it uses less digits than its factorization.

157768531290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029 (or 7026 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The spelling of 157768531290 in words is "one hundred fifty-seven billion, seven hundred sixty-eight million, five hundred thirty-one thousand, two hundred ninety".