77650716451 has 48 divisors (see below), whose sum is σ = 107702618112. Its totient is φ = 55110585600.

The previous prime is 77650716379. The next prime is 77650716497. The reversal of 77650716451 is 15461705677.

It is not a de Polignac number, because 77650716451 - 2¹¹ = 77650714403 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77650716395 and 77650716404.

It is not an unprimeable number, because it can be changed into a prime (77650713451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147370 + ... + 420736.

It is an arithmetic number, because the mean of its divisors is an integer number (2243804544).

Almost surely, 2^77650716451 is an apocalyptic number.

77650716451 is a deficient number, since it is larger than the sum of its proper divisors (30051901661).

77650716451 is a wasteful number, since it uses less digits than its factorization.

77650716451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273440 (or 273433 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 77650716451 in words is "seventy-seven billion, six hundred fifty million, seven hundred sixteen thousand, four hundred fifty-one".