77430437451 has 6 divisors (see below), whose sum is σ = 111843965220. Its totient is φ = 51620291628.

The previous prime is 77430437443. The next prime is 77430437453. The reversal of 77430437451 is 15473403477.

It is a happy number.

It is not a de Polignac number, because 77430437451 - 2³ = 77430437443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77430437397 and 77430437406.

It is not an unprimeable number, because it can be changed into a prime (77430437453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4301690961 + ... + 4301690978.

It is an arithmetic number, because the mean of its divisors is an integer number (18640660870).

Almost surely, 2^77430437451 is an apocalyptic number.

77430437451 is a deficient number, since it is larger than the sum of its proper divisors (34413527769).

77430437451 is a wasteful number, since it uses less digits than its factorization.

77430437451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603381945 (or 8603381942 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 45.

The spelling of 77430437451 in words is "seventy-seven billion, four hundred thirty million, four hundred thirty-seven thousand, four hundred fifty-one".