2151005460440 has 32 divisors (see below), whose sum is σ = 4839838722000. Its totient is φ = 860388595584.

The previous prime is 2151005460413. The next prime is 2151005460451. The reversal of 2151005460440 is 440645001512.

It is a junction number, because it is equal to n+sod(n) for n = 2151005460397 and 2151005460406.

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, 2366171 + ... + 3146549.

Almost surely, 2^{2151005460440} is an apocalyptic number.

2151005460440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151005460440 is an abundant number, since it is smaller than the sum of its proper divisors (2688833261560).

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

2151005460440 is a wasteful number, since it uses less digits than its factorization.

2151005460440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849299 (or 849295 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 2151005460440 in words is "two trillion, one hundred fifty-one billion, five million, four hundred sixty thousand, four hundred forty".