2657342663664 has 80 divisors (see below), whose sum is σ = 7438218840192. Its totient is φ = 812627645184.

The previous prime is 2657342663663. The next prime is 2657342663683. The reversal of 2657342663664 is 4663662437562.

It is a super-2 number, since 2×2657342663664² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2657342663598 and 2657342663607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2657342663663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12961362 + ... + 13164785.

Almost surely, 2^{2657342663664} is an apocalyptic number.

2657342663664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2657342663664 is an abundant number, since it is smaller than the sum of its proper divisors (4780876176528).

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

2657342663664 is a wasteful number, since it uses less digits than its factorization.

2657342663664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26126334 (or 26126328 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 60.

The spelling of 2657342663664 in words is "two trillion, six hundred fifty-seven billion, three hundred forty-two million, six hundred sixty-three thousand, six hundred sixty-four".