2051230055511 has 32 divisors (see below), whose sum is σ = 3512474219520. Its totient is φ = 1034925433344.

The previous prime is 2051230055507. The next prime is 2051230055519. The reversal of 2051230055511 is 1155500321502.

It is not a de Polignac number, because 2051230055511 - 2² = 2051230055507 is a prime.

It is a super-2 number, since 2×2051230055511² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051230055519) 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, 163334226 + ... + 163346783.

It is an arithmetic number, because the mean of its divisors is an integer number (109764819360).

Almost surely, 2^{2051230055511} is an apocalyptic number.

2051230055511 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2051230055511 is a deficient number, since it is larger than the sum of its proper divisors (1461244164009).

2051230055511 is a wasteful number, since it uses less digits than its factorization.

2051230055511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326681055.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 2051230055511 in words is "two trillion, fifty-one billion, two hundred thirty million, fifty-five thousand, five hundred eleven".