749270466561 has 16 divisors (see below), whose sum is σ = 1046338611840. Its totient is φ = 476019456000.

The previous prime is 749270466557. The next prime is 749270466599. The reversal of 749270466561 is 165664072947.

It is not a de Polignac number, because 749270466561 - 2² = 749270466557 is a prime.

It is a super-2 number, since 2×749270466561² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (749270466521) 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, 20165440 + ... + 20202561.

It is an arithmetic number, because the mean of its divisors is an integer number (65396163240).

It is a Proth number, since it is equal to 11165 ⋅ 2²⁶ + 1 and 11165 < 2²⁶.

Almost surely, 2^749270466561 is an apocalyptic number.

It is an amenable number.

749270466561 is a deficient number, since it is larger than the sum of its proper divisors (297068145279).

749270466561 is a wasteful number, since it uses less digits than its factorization.

749270466561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40368296.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 749270466561 in words is "seven hundred forty-nine billion, two hundred seventy million, four hundred sixty-six thousand, five hundred sixty-one".