157651297779640 has 128 divisors (see below), whose sum is σ = 406059093273600. Its totient is φ = 53962552627200.

The previous prime is 157651297779629. The next prime is 157651297779643. The reversal of 157651297779640 is 46977792156751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157651297779643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1907392315 + ... + 1907474965.

It is an arithmetic number, because the mean of its divisors is an integer number (3172336666200).

Almost surely, 2^{157651297779640} is an apocalyptic number.

157651297779640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157651297779640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203029546636800).

157651297779640 is an abundant number, since it is smaller than the sum of its proper divisors (248407795493960).

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

157651297779640 is a wasteful number, since it uses less digits than its factorization.

157651297779640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93845 (or 93841 counting only the distinct ones).

The product of its (nonzero) digits is 1400263200, while the sum is 76.

The spelling of 157651297779640 in words is "one hundred fifty-seven trillion, six hundred fifty-one billion, two hundred ninety-seven million, seven hundred seventy-nine thousand, six hundred forty".