1520020331051 has 8 divisors (see below), whose sum is σ = 1558020358608. Its totient is φ = 1482946597200.

The previous prime is 1520020331041. The next prime is 1520020331059. The reversal of 1520020331051 is 1501330200251.

It is a happy number.

It is not a de Polignac number, because 1520020331051 - 2¹⁸ = 1520020068907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520020331059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10958345 + ... + 11096186.

It is an arithmetic number, because the mean of its divisors is an integer number (194752544826).

Almost surely, 2^{1520020331051} is an apocalyptic number.

1520020331051 is a deficient number, since it is larger than the sum of its proper divisors (38000027557).

1520020331051 is an frugal number, since it uses more digits than its factorization.

1520020331051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22054654 (or 22054572 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 1520020331051 in words is "one trillion, five hundred twenty billion, twenty million, three hundred thirty-one thousand, fifty-one".