77800007450451 has 32 divisors (see below), whose sum is σ = 121885590113280. Its totient is φ = 43518391488000.

The previous prime is 77800007450413. The next prime is 77800007450461. The reversal of 77800007450451 is 15405470000877.

It is not a de Polignac number, because 77800007450451 - 2¹⁰ = 77800007449427 is a prime.

It is a super-2 number, since 2×77800007450451² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77800007450451.

It is not an unprimeable number, because it can be changed into a prime (77800007450461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9612406 + ... + 15747963.

It is an arithmetic number, because the mean of its divisors is an integer number (3808924691040).

Almost surely, 2^{77800007450451} is an apocalyptic number.

77800007450451 is a deficient number, since it is larger than the sum of its proper divisors (44085582662829).

77800007450451 is a wasteful number, since it uses less digits than its factorization.

77800007450451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25367547.

The product of its (nonzero) digits is 1097600, while the sum is 48.

The spelling of 77800007450451 in words is "seventy-seven trillion, eight hundred billion, seven million, four hundred fifty thousand, four hundred fifty-one".