15040320551 has 2 divisors, whose sum is σ = 15040320552. Its totient is φ = 15040320550.

The previous prime is 15040320527. The next prime is 15040320583. The reversal of 15040320551 is 15502304051.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15040320551 - 2²² = 15036126247 is a prime.

It is a super-2 number, since 2×15040320551² (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 15040320551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15040320851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7520160275 + 7520160276.

It is an arithmetic number, because the mean of its divisors is an integer number (7520160276).

Almost surely, 2^15040320551 is an apocalyptic number.

15040320551 is a deficient number, since it is larger than the sum of its proper divisors (1).

15040320551 is an equidigital number, since it uses as much as digits as its factorization.

15040320551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 15040320551 in words is "fifteen billion, forty million, three hundred twenty thousand, five hundred fifty-one".