157134786840 has 160 divisors (see below), whose sum is σ = 530886106080. Its totient is φ = 41685331968.

The previous prime is 157134786791. The next prime is 157134786859. The reversal of 157134786840 is 48687431751.

157134786840 is a `hidden beast` number, since 1 + 5 + 71 + 3 + 478 + 68 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 499677 + ... + 750963.

It is an arithmetic number, because the mean of its divisors is an integer number (3318038163).

Almost surely, 2^157134786840 is an apocalyptic number.

157134786840 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 157134786840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265443053040).

157134786840 is an abundant number, since it is smaller than the sum of its proper divisors (373751319240).

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

157134786840 is a wasteful number, since it uses less digits than its factorization.

157134786840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251503 (or 251490 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 157134786840 in words is "one hundred fifty-seven billion, one hundred thirty-four million, seven hundred eighty-six thousand, eight hundred forty".