2157925536980 has 48 divisors (see below), whose sum is σ = 4554503562000. Its totient is φ = 858821031936.

The previous prime is 2157925536973. The next prime is 2157925537039. The reversal of 2157925536980 is 896355297512.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8400089104 + 2149525447876 = 91652^2 + 1466126^2 .

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, 6661406 + ... + 6977834.

It is an arithmetic number, because the mean of its divisors is an integer number (94885490875).

Almost surely, 2^{2157925536980} is an apocalyptic number.

2157925536980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157925536980 is an abundant number, since it is smaller than the sum of its proper divisors (2396578025020).

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

2157925536980 is a wasteful number, since it uses less digits than its factorization.

2157925536980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318156 (or 318154 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 62.

The spelling of 2157925536980 in words is "two trillion, one hundred fifty-seven billion, nine hundred twenty-five million, five hundred thirty-six thousand, nine hundred eighty".