615216070397 has 2 divisors, whose sum is σ = 615216070398. Its totient is φ = 615216070396.

The previous prime is 615216070393. The next prime is 615216070409. The reversal of 615216070397 is 793070612516.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612367286521 + 2848783876 = 782539^2 + 53374^2 .

It is a cyclic number.

It is not a de Polignac number, because 615216070397 - 2² = 615216070393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615216070393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307608035198 + 307608035199.

It is an arithmetic number, because the mean of its divisors is an integer number (307608035199).

Almost surely, 2^615216070397 is an apocalyptic number.

It is an amenable number.

615216070397 is a deficient number, since it is larger than the sum of its proper divisors (1).

615216070397 is an equidigital number, since it uses as much as digits as its factorization.

615216070397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 615216070397 in words is "six hundred fifteen billion, two hundred sixteen million, seventy thousand, three hundred ninety-seven".