749024778041 has 12 divisors (see below), whose sum is σ = 790574379732. Its totient is φ = 709555400064.

The previous prime is 749024777989. The next prime is 749024778043. The reversal of 749024778041 is 140877420947.

It can be written as a sum of positive squares in 2 ways, for example, as 68589514816 + 680435263225 = 261896^2 + 824885^2 .

It is a de Polignac number, because none of the positive numbers 2^k-749024778041 is a prime.

It is a super-2 number, since 2×749024778041² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749024778043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6169661 + ... + 6289893.

It is an arithmetic number, because the mean of its divisors is an integer number (65881198311).

Almost surely, 2^749024778041 is an apocalyptic number.

It is an amenable number.

749024778041 is a deficient number, since it is larger than the sum of its proper divisors (41549601691).

749024778041 is a wasteful number, since it uses less digits than its factorization.

749024778041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137528 (or 137509 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 749024778041 in words is "seven hundred forty-nine billion, twenty-four million, seven hundred seventy-eight thousand, forty-one".