615621011854651 has 8 divisors (see below), whose sum is σ = 672779429722944. Its totient is φ = 558661405875720.

The previous prime is 615621011854601. The next prime is 615621011854663. The reversal of 615621011854651 is 156458110126516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 615621011854651 - 2¹⁷ = 615621011723579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615621011854601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49702965861 + ... + 49702978246.

It is an arithmetic number, because the mean of its divisors is an integer number (84097428715368).

Almost surely, 2^{615621011854651} is an apocalyptic number.

615621011854651 is a deficient number, since it is larger than the sum of its proper divisors (57158417868293).

615621011854651 is a wasteful number, since it uses less digits than its factorization.

615621011854651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99405944681.

The product of its (nonzero) digits is 1728000, while the sum is 52.

The spelling of 615621011854651 in words is "six hundred fifteen trillion, six hundred twenty-one billion, eleven million, eight hundred fifty-four thousand, six hundred fifty-one".