77245754475 has 48 divisors (see below), whose sum is σ = 135291380480. Its totient is φ = 38780726400.

The previous prime is 77245754471. The next prime is 77245754479. The reversal of 77245754475 is 57445754277.

It is an interprime number because it is at equal distance from previous prime (77245754471) and next prime (77245754479).

It is not a de Polignac number, because 77245754475 - 2² = 77245754471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (77245754471) 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, 51090 + ... + 396360.

Almost surely, 2^77245754475 is an apocalyptic number.

77245754475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77245754475 is a deficient number, since it is larger than the sum of its proper divisors (58045626005).

77245754475 is a wasteful number, since it uses less digits than its factorization.

77245754475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345460 (or 345455 counting only the distinct ones).

The product of its digits is 38416000, while the sum is 57.

The spelling of 77245754475 in words is "seventy-seven billion, two hundred forty-five million, seven hundred fifty-four thousand, four hundred seventy-five".