1657670996240 has 80 divisors (see below), whose sum is σ = 4420344044160. Its totient is φ = 566321710080.

The previous prime is 1657670996213. The next prime is 1657670996257. The reversal of 1657670996240 is 426990767561.

It is a tau number, because it is divible by the number of its divisors (80).

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, 5109770 + ... + 5424489.

It is an arithmetic number, because the mean of its divisors is an integer number (55254300552).

Almost surely, 2^{1657670996240} is an apocalyptic number.

1657670996240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1657670996240 is an abundant number, since it is smaller than the sum of its proper divisors (2762673047920).

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

1657670996240 is a wasteful number, since it uses less digits than its factorization.

1657670996240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534560 (or 10534554 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 1657670996240 in words is "one trillion, six hundred fifty-seven billion, six hundred seventy million, nine hundred ninety-six thousand, two hundred forty".