77421652348 has 24 divisors (see below), whose sum is σ = 143691870672. Its totient is φ = 36374264064.

The previous prime is 77421652339. The next prime is 77421652361. The reversal of 77421652348 is 84325612477.

It is a super-2 number, since 2×77421652348² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886990 + ... + 970357.

It is an arithmetic number, because the mean of its divisors is an integer number (5987161278).

Almost surely, 2^77421652348 is an apocalyptic number.

It is an amenable number.

77421652348 is a deficient number, since it is larger than the sum of its proper divisors (66270218324).

77421652348 is a wasteful number, since it uses less digits than its factorization.

77421652348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857981 (or 1857979 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 49.

The spelling of 77421652348 in words is "seventy-seven billion, four hundred twenty-one million, six hundred fifty-two thousand, three hundred forty-eight".