615841862551 has 2 divisors, whose sum is σ = 615841862552. Its totient is φ = 615841862550.

The previous prime is 615841862507. The next prime is 615841862683. The reversal of 615841862551 is 155268148516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 615841862551 - 2¹³ = 615841854359 is a prime.

It is a super-2 number, since 2×615841862551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615841866551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307920931275 + 307920931276.

It is an arithmetic number, because the mean of its divisors is an integer number (307920931276).

Almost surely, 2^615841862551 is an apocalyptic number.

615841862551 is a deficient number, since it is larger than the sum of its proper divisors (1).

615841862551 is an equidigital number, since it uses as much as digits as its factorization.

615841862551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304000, while the sum is 52.

The spelling of 615841862551 in words is "six hundred fifteen billion, eight hundred forty-one million, eight hundred sixty-two thousand, five hundred fifty-one".