74770407747 has 64 divisors (see below), whose sum is σ = 134211379200. Its totient is φ = 40230069120.

The previous prime is 74770407731. The next prime is 74770407757.

74770407747 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74770407747 - 2⁴ = 74770407731 is a prime.

It is a super-2 number, since 2×74770407747² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74770407693 and 74770407702.

It is not an unprimeable number, because it can be changed into a prime (74770407707) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44329 + ... + 389237.

It is an arithmetic number, because the mean of its divisors is an integer number (2097052800).

Almost surely, 2^74770407747 is an apocalyptic number.

74770407747 is a deficient number, since it is larger than the sum of its proper divisors (59440971453).

74770407747 is a wasteful number, since it uses less digits than its factorization.

74770407747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344993 (or 344987 counting only the distinct ones).

The product of its (nonzero) digits is 7529536, while the sum is 54.

The spelling of 74770407747 in words is "seventy-four billion, seven hundred seventy million, four hundred seven thousand, seven hundred forty-seven".