13457986690 has 16 divisors (see below), whose sum is σ = 24879089592. Its totient is φ = 5237702784.

The previous prime is 13457986687. The next prime is 13457986697. The reversal of 13457986690 is 9668975431.

It can be written as a sum of positive squares in 4 ways, for example, as 13444170601 + 13816089 = 115949^2 + 3717^2 .

It is a super-2 number, since 2×13457986690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13457986697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18186099 + ... + 18186838.

Almost surely, 2^13457986690 is an apocalyptic number.

13457986690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13457986690 is a deficient number, since it is larger than the sum of its proper divisors (11421102902).

13457986690 is a wasteful number, since it uses less digits than its factorization.

13457986690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36372981.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 13457986690 in words is "thirteen billion, four hundred fifty-seven million, nine hundred eighty-six thousand, six hundred ninety".