15640153933 has 2 divisors, whose sum is σ = 15640153934. Its totient is φ = 15640153932.

The previous prime is 15640153891. The next prime is 15640153979. The reversal of 15640153933 is 33935104651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15630500484 + 9653449 = 125022^2 + 3107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15640153933 is a prime.

It is a super-2 number, since 2×15640153933² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15640103933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7820076966 + 7820076967.

It is an arithmetic number, because the mean of its divisors is an integer number (7820076967).

Almost surely, 2^15640153933 is an apocalyptic number.

It is an amenable number.

15640153933 is a deficient number, since it is larger than the sum of its proper divisors (1).

15640153933 is an equidigital number, since it uses as much as digits as its factorization.

15640153933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 15640153933 in words is "fifteen billion, six hundred forty million, one hundred fifty-three thousand, nine hundred thirty-three".