747979979747 has 16 divisors (see below), whose sum is σ = 1004280813312. Its totient is φ = 538007577120.

The previous prime is 747979979743. The next prime is 747979979759.

747979979747 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 747979979747 - 2² = 747979979743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (747979979743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373615373 + ... + 373617374.

It is an arithmetic number, because the mean of its divisors is an integer number (62767550832).

Almost surely, 2^747979979747 is an apocalyptic number.

747979979747 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

747979979747 is a deficient number, since it is larger than the sum of its proper divisors (256300833565).

747979979747 is a wasteful number, since it uses less digits than its factorization.

747979979747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747232778.

The product of its digits is 12350321424, while the sum is 86.

The spelling of 747979979747 in words is "seven hundred forty-seven billion, nine hundred seventy-nine million, nine hundred seventy-nine thousand, seven hundred forty-seven".