157815987751008 has 72 divisors (see below), whose sum is σ = 448890685942608. Its totient is φ = 52593435240192.

The previous prime is 157815987750959. The next prime is 157815987751027. The reversal of 157815987751008 is 800157789518751.

157815987751008 is a `hidden beast` number, since 1 + 5 + 7 + 8 + 15 + 98 + 7 + 7 + 510 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60671935 + ... + 63219582.

It is an arithmetic number, because the mean of its divisors is an integer number (6234592860314).

Almost surely, 2^{157815987751008} is an apocalyptic number.

157815987751008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

157815987751008 is an abundant number, since it is smaller than the sum of its proper divisors (291074698191600).

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

157815987751008 is a wasteful number, since it uses less digits than its factorization.

157815987751008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123895956 (or 123895945 counting only the distinct ones).

The product of its (nonzero) digits is 197568000, while the sum is 72.

The spelling of 157815987751008 in words is "one hundred fifty-seven trillion, eight hundred fifteen billion, nine hundred eighty-seven million, seven hundred fifty-one thousand, eight".