2116890157440 has 64 divisors (see below), whose sum is σ = 6747587382960. Its totient is φ = 564504041472.

The previous prime is 2116890157307. The next prime is 2116890157451. The reversal of 2116890157440 is 447510986112.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2116890157440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551271559 + ... + 551275398.

Almost surely, 2^{2116890157440} is an apocalyptic number.

2116890157440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2116890157440 is an abundant number, since it is smaller than the sum of its proper divisors (4630697225520).

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

2116890157440 is a wasteful number, since it uses less digits than its factorization.

2116890157440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102546979 (or 1102546967 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 2116890157440 in words is "two trillion, one hundred sixteen billion, eight hundred ninety million, one hundred fifty-seven thousand, four hundred forty".