749247057871 has 64 divisors (see below), whose sum is σ = 853658861440. Its totient is φ = 653034700800.

The previous prime is 749247057859. The next prime is 749247057887. The reversal of 749247057871 is 178750742947.

It is a 14-Lehmer number, since φ(749247057871) divides (749247057871-1)¹⁴.

It is a cyclic number.

It is not a de Polignac number, because 749247057871 - 2⁹ = 749247057359 is a prime.

It is a super-2 number, since 2×749247057871² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749247058871) 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, 623852071 + ... + 623853271.

It is an arithmetic number, because the mean of its divisors is an integer number (13338419710).

Almost surely, 2^749247057871 is an apocalyptic number.

749247057871 is a deficient number, since it is larger than the sum of its proper divisors (104411803569).

749247057871 is a wasteful number, since it uses less digits than its factorization.

749247057871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 749247057871 in words is "seven hundred forty-nine billion, two hundred forty-seven million, fifty-seven thousand, eight hundred seventy-one".