2051703417520 has 40 divisors (see below), whose sum is σ = 4794424748784. Its totient is φ = 816515465472.

The previous prime is 2051703417493. The next prime is 2051703417521. The reversal of 2051703417520 is 257143071502.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2051703417520.

It is not an unprimeable number, because it can be changed into a prime (2051703417521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65076354 + ... + 65107873.

Almost surely, 2^{2051703417520} is an apocalyptic number.

2051703417520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051703417520 is an abundant number, since it is smaller than the sum of its proper divisors (2742721331264).

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

2051703417520 is a wasteful number, since it uses less digits than its factorization.

2051703417520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130184437 (or 130184431 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 2051703417520 in words is "two trillion, fifty-one billion, seven hundred three million, four hundred seventeen thousand, five hundred twenty".