3720650915497 has 2 divisors, whose sum is σ = 3720650915498. Its totient is φ = 3720650915496.

The previous prime is 3720650915479. The next prime is 3720650915519. The reversal of 3720650915497 is 7945190560273.

It is a happy number.

Together with previous prime (3720650915479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2839885558416 + 880765357081 = 1685196^2 + 938491^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720650915497 - 2²³ = 3720642526889 is a prime.

It is not a weakly prime, because it can be changed into another prime (3720650919497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860325457748 + 1860325457749.

It is an arithmetic number, because the mean of its divisors is an integer number (1860325457749).

Almost surely, 2^{3720650915497} is an apocalyptic number.

It is an amenable number.

3720650915497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720650915497 is an equidigital number, since it uses as much as digits as its factorization.

3720650915497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14288400, while the sum is 58.

The spelling of 3720650915497 in words is "three trillion, seven hundred twenty billion, six hundred fifty million, nine hundred fifteen thousand, four hundred ninety-seven".