977881419533 has 4 divisors (see below), whose sum is σ = 977884662048. Its totient is φ = 977878177020.

The previous prime is 977881419439. The next prime is 977881419539. The reversal of 977881419533 is 335914188779.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 977881419533 - 2¹⁰ = 977881418509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 977881419533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977881419539) 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, 1116503 + ... + 1789508.

It is an arithmetic number, because the mean of its divisors is an integer number (244471165512).

Almost surely, 2^977881419533 is an apocalyptic number.

It is an amenable number.

977881419533 is a deficient number, since it is larger than the sum of its proper divisors (3242515).

977881419533 is a wasteful number, since it uses less digits than its factorization.

977881419533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242514.

The product of its digits is 45722880, while the sum is 65.

The spelling of 977881419533 in words is "nine hundred seventy-seven billion, eight hundred eighty-one million, four hundred nineteen thousand, five hundred thirty-three".