615263113901 has 2 divisors, whose sum is σ = 615263113902. Its totient is φ = 615263113900.

The previous prime is 615263113879. The next prime is 615263113951. The reversal of 615263113901 is 109311362516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 569042413801 + 46220700100 = 754349^2 + 214990^2 .

It is a cyclic number.

It is not a de Polignac number, because 615263113901 - 2⁶ = 615263113837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615263113951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307631556950 + 307631556951.

It is an arithmetic number, because the mean of its divisors is an integer number (307631556951).

Almost surely, 2^615263113901 is an apocalyptic number.

It is an amenable number.

615263113901 is a deficient number, since it is larger than the sum of its proper divisors (1).

615263113901 is an equidigital number, since it uses as much as digits as its factorization.

615263113901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 615263113901 in words is "six hundred fifteen billion, two hundred sixty-three million, one hundred thirteen thousand, nine hundred one".