1520151374979 has 16 divisors (see below), whose sum is σ = 2257451011200. Its totient is φ = 1011015544968.

The previous prime is 1520151374971. The next prime is 1520151374983. The reversal of 1520151374979 is 9794731510251.

1520151374979 is a `hidden beast` number, since 1 + 5 + 2 + 0 + 15 + 137 + 497 + 9 = 666.

It is not a de Polignac number, because 1520151374979 - 2³ = 1520151374971 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1520151374971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67174729 + ... + 67197354.

It is an arithmetic number, because the mean of its divisors is an integer number (141090688200).

Almost surely, 2^{1520151374979} is an apocalyptic number.

1520151374979 is a deficient number, since it is larger than the sum of its proper divisors (737299636221).

1520151374979 is a wasteful number, since it uses less digits than its factorization.

1520151374979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134372511 (or 134372505 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The spelling of 1520151374979 in words is "one trillion, five hundred twenty billion, one hundred fifty-one million, three hundred seventy-four thousand, nine hundred seventy-nine".