2055516681507 has 16 divisors (see below), whose sum is σ = 2903288572800. Its totient is φ = 1289121437312.

The previous prime is 2055516681499. The next prime is 2055516681577. The reversal of 2055516681507 is 7051866155502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2055516681507 - 2³ = 2055516681499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 2055516681507.

It is not an unprimeable number, because it can be changed into a prime (2055516681577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9493773 + ... + 9707870.

It is an arithmetic number, because the mean of its divisors is an integer number (181455535800).

Almost surely, 2^{2055516681507} is an apocalyptic number.

2055516681507 is a deficient number, since it is larger than the sum of its proper divisors (847771891293).

2055516681507 is a wasteful number, since it uses less digits than its factorization.

2055516681507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19203762.

The product of its (nonzero) digits is 2520000, while the sum is 51.

The spelling of 2055516681507 in words is "two trillion, fifty-five billion, five hundred sixteen million, six hundred eighty-one thousand, five hundred seven".