12497361646 has 32 divisors (see below), whose sum is σ = 23586140160. Its totient is φ = 4824424800.

The previous prime is 12497361637. The next prime is 12497361661. The reversal of 12497361646 is 64616379421.

It is a super-2 number, since 2×12497361646² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12497361646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355470 + ... + 389041.

It is an arithmetic number, because the mean of its divisors is an integer number (737066880).

Almost surely, 2^12497361646 is an apocalyptic number.

12497361646 is a deficient number, since it is larger than the sum of its proper divisors (11088778514).

12497361646 is a wasteful number, since it uses less digits than its factorization.

12497361646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744640.

The product of its digits is 1306368, while the sum is 49.

The spelling of 12497361646 in words is "twelve billion, four hundred ninety-seven million, three hundred sixty-one thousand, six hundred forty-six".