1642310500656 has 160 divisors (see below), whose sum is σ = 5016126804480. Its totient is φ = 453216688128.

The previous prime is 1642310500627. The next prime is 1642310500657. The reversal of 1642310500656 is 6560050132461.

It is a super-2 number, since 2×1642310500656² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1642310500657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1221055 + ... + 2185313.

It is an arithmetic number, because the mean of its divisors is an integer number (31350792528).

Almost surely, 2^{1642310500656} is an apocalyptic number.

1642310500656 is a gapful number since it is divisible by the number (16) 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 1642310500656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2508063402240).

1642310500656 is an abundant number, since it is smaller than the sum of its proper divisors (3373816303824).

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

1642310500656 is a wasteful number, since it uses less digits than its factorization.

1642310500656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964451 (or 964445 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 1642310500656 in words is "one trillion, six hundred forty-two billion, three hundred ten million, five hundred thousand, six hundred fifty-six".