7240515872731 has 2 divisors, whose sum is σ = 7240515872732. Its totient is φ = 7240515872730.

The previous prime is 7240515872717. The next prime is 7240515872761. The reversal of 7240515872731 is 1372785150427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7240515872731 - 2⁵ = 7240515872699 is a prime.

It is a super-2 number, since 2×7240515872731² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7240515872761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3620257936365 + 3620257936366.

It is an arithmetic number, because the mean of its divisors is an integer number (3620257936366).

Almost surely, 2^{7240515872731} is an apocalyptic number.

7240515872731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7240515872731 is an equidigital number, since it uses as much as digits as its factorization.

7240515872731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3292800, while the sum is 52.

The spelling of 7240515872731 in words is "seven trillion, two hundred forty billion, five hundred fifteen million, eight hundred seventy-two thousand, seven hundred thirty-one".