157720511200 has 144 divisors (see below), whose sum is σ = 440704605600. Its totient is φ = 53993963520.

The previous prime is 157720511191. The next prime is 157720511239. The reversal of 157720511200 is 2115027751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3747876 + ... + 3789724.

It is an arithmetic number, because the mean of its divisors is an integer number (3060448650).

Almost surely, 2^157720511200 is an apocalyptic number.

157720511200 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 157720511200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220352302800).

157720511200 is an abundant number, since it is smaller than the sum of its proper divisors (282984094400).

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

157720511200 is a wasteful number, since it uses less digits than its factorization.

157720511200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42549 (or 42536 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 31.

Adding to 157720511200 its reverse (2115027751), we get a palindrome (159835538951).

The spelling of 157720511200 in words is "one hundred fifty-seven billion, seven hundred twenty million, five hundred eleven thousand, two hundred".