7280406491903 has 2 divisors, whose sum is σ = 7280406491904. Its totient is φ = 7280406491902.

The previous prime is 7280406491861. The next prime is 7280406491933. The reversal of 7280406491903 is 3091946040827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7280406491903 - 2²² = 7280402297599 is a prime.

It is a super-2 number, since 2×7280406491903² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7280406491933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3640203245951 + 3640203245952.

It is an arithmetic number, because the mean of its divisors is an integer number (3640203245952).

Almost surely, 2^{7280406491903} is an apocalyptic number.

7280406491903 is a deficient number, since it is larger than the sum of its proper divisors (1).

7280406491903 is an equidigital number, since it uses as much as digits as its factorization.

7280406491903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 7280406491903 in words is "seven trillion, two hundred eighty billion, four hundred six million, four hundred ninety-one thousand, nine hundred three".