749169961947 has 48 divisors (see below), whose sum is σ = 1252142686080. Its totient is φ = 426585081600.

The previous prime is 749169961921. The next prime is 749169961957.

749169961947 is a `hidden beast` number, since 7 + 491 + 6 + 9 + 96 + 1 + 9 + 47 = 666.

749169961947 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 749169961947 - 2²² = 749165767643 is a prime.

It is a super-2 number, since 2×749169961947² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (749169961957) 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, 571204 + ... + 1350782.

It is an arithmetic number, because the mean of its divisors is an integer number (26086305960).

Almost surely, 2^749169961947 is an apocalyptic number.

749169961947 is a deficient number, since it is larger than the sum of its proper divisors (502972724133).

749169961947 is a wasteful number, since it uses less digits than its factorization.

749169961947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780184 (or 780181 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The spelling of 749169961947 in words is "seven hundred forty-nine billion, one hundred sixty-nine million, nine hundred sixty-one thousand, nine hundred forty-seven".