74970820511 has 4 divisors (see below), whose sum is σ = 75012775752. Its totient is φ = 74928865272.

The previous prime is 74970820469. The next prime is 74970820517. The reversal of 74970820511 is 11502807947.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74970820511 - 2³⁴ = 57790951327 is a prime.

It is a super-2 number, since 2×74970820511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74970820517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20974940 + ... + 20978513.

It is an arithmetic number, because the mean of its divisors is an integer number (18753193938).

Almost surely, 2^74970820511 is an apocalyptic number.

74970820511 is a deficient number, since it is larger than the sum of its proper divisors (41955241).

74970820511 is a wasteful number, since it uses less digits than its factorization.

74970820511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41955240.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 74970820511 in words is "seventy-four billion, nine hundred seventy million, eight hundred twenty thousand, five hundred eleven".