2135890056984 has 72 divisors (see below), whose sum is σ = 5364486439260. Its totient is φ = 708677048192.

The previous prime is 2135890056977. The next prime is 2135890056991. The reversal of 2135890056984 is 4896500985312.

It is an interprime number because it is at equal distance from previous prime (2135890056977) and next prime (2135890056991).

It is a super-2 number, since 2×2135890056984² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1925959822 + ... + 1925960930.

Almost surely, 2^{2135890056984} is an apocalyptic number.

2135890056984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2135890056984 is an abundant number, since it is smaller than the sum of its proper divisors (3228596382276).

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

2135890056984 is an frugal number, since it uses more digits than its factorization.

2135890056984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 2135890056984 in words is "two trillion, one hundred thirty-five billion, eight hundred ninety million, fifty-six thousand, nine hundred eighty-four".