2051718905348 has 48 divisors (see below), whose sum is σ = 4133784170880. Its totient is φ = 872806538496.

The previous prime is 2051718905329. The next prime is 2051718905441. The reversal of 2051718905348 is 8435098171502.

It is a super-2 number, since 2×2051718905348² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2051718905348.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56551358 + ... + 56587626.

It is an arithmetic number, because the mean of its divisors is an integer number (86120503560).

Almost surely, 2^{2051718905348} is an apocalyptic number.

2051718905348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2051718905348 is an abundant number, since it is smaller than the sum of its proper divisors (2082065265532).

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

2051718905348 is a wasteful number, since it uses less digits than its factorization.

2051718905348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51164 (or 51162 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 2051718905348 in words is "two trillion, fifty-one billion, seven hundred eighteen million, nine hundred five thousand, three hundred forty-eight".