76420822981 has 8 divisors (see below), whose sum is σ = 77526177120. Its totient is φ = 75319864752.

The previous prime is 76420822969. The next prime is 76420822987. The reversal of 76420822981 is 18922802467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76420822981 - 2¹¹ = 76420820933 is a prime.

It is a super-2 number, since 2×76420822981² (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 (76420822987) 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, 1063950 + ... + 1133503.

It is an arithmetic number, because the mean of its divisors is an integer number (9690772140).

Almost surely, 2^76420822981 is an apocalyptic number.

It is an amenable number.

76420822981 is a deficient number, since it is larger than the sum of its proper divisors (1105354139).

76420822981 is a wasteful number, since it uses less digits than its factorization.

76420822981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197955.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 76420822981 in words is "seventy-six billion, four hundred twenty million, eight hundred twenty-two thousand, nine hundred eighty-one".