736166730621 has 48 divisors (see below), whose sum is σ = 1189658327040. Its totient is φ = 403291899360.

The previous prime is 736166730613. The next prime is 736166730631. The reversal of 736166730621 is 126037661637.

It is not a de Polignac number, because 736166730621 - 2³ = 736166730613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (736166730601) 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, 267291 + ... + 1242488.

It is an arithmetic number, because the mean of its divisors is an integer number (24784548480).

Almost surely, 2^736166730621 is an apocalyptic number.

It is an amenable number.

736166730621 is a deficient number, since it is larger than the sum of its proper divisors (453491596419).

736166730621 is a wasteful number, since it uses less digits than its factorization.

736166730621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509934 (or 1509927 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 48.

The spelling of 736166730621 in words is "seven hundred thirty-six billion, one hundred sixty-six million, seven hundred thirty thousand, six hundred twenty-one".