1657452312980 has 12 divisors (see below), whose sum is σ = 3480649857300. Its totient is φ = 662980925184.

The previous prime is 1657452312979. The next prime is 1657452313001. The reversal of 1657452312980 is 892132547561.

It can be written as a sum of positive squares in 2 ways, for example, as 660845429776 + 996606883204 = 812924^2 + 998302^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41436307805 + ... + 41436307844.

It is an arithmetic number, because the mean of its divisors is an integer number (290054154775).

It is a 1-persistent number, because it is pandigital, but 2⋅1657452312980 = 3314904625960 is not.

Almost surely, 2^{1657452312980} is an apocalyptic number.

1657452312980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1657452312980 is an abundant number, since it is smaller than the sum of its proper divisors (1823197544320).

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

1657452312980 is a wasteful number, since it uses less digits than its factorization.

1657452312980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82872615658 (or 82872615656 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 1657452312980 in words is "one trillion, six hundred fifty-seven billion, four hundred fifty-two million, three hundred twelve thousand, nine hundred eighty".