157989322064 has 80 divisors (see below), whose sum is σ = 365469941760. Its totient is φ = 64735943040.

The previous prime is 157989322019. The next prime is 157989322087. The reversal of 157989322064 is 460223989751.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14057 + ... + 562295.

It is an arithmetic number, because the mean of its divisors is an integer number (4568374272).

It is a 1-persistent number, because it is pandigital, but 2⋅157989322064 = 315978644128 is not.

Almost surely, 2^157989322064 is an apocalyptic number.

157989322064 is a gapful number since it is divisible by the number (14) 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 157989322064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182734970880).

157989322064 is an abundant number, since it is smaller than the sum of its proper divisors (207480619696).

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

157989322064 is a wasteful number, since it uses less digits than its factorization.

157989322064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548368 (or 548362 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 157989322064 in words is "one hundred fifty-seven billion, nine hundred eighty-nine million, three hundred twenty-two thousand, sixty-four".