615561016155 has 16 divisors (see below), whose sum is σ = 996763864320. Its totient is φ = 324343795808.

The previous prime is 615561016153. The next prime is 615561016183. The reversal of 615561016155 is 551610165516.

It is not a de Polignac number, because 615561016155 - 2¹ = 615561016153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (615561016153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247212015 + ... + 247214504.

It is an arithmetic number, because the mean of its divisors is an integer number (62297741520).

Almost surely, 2^615561016155 is an apocalyptic number.

615561016155 is a deficient number, since it is larger than the sum of its proper divisors (381202848165).

615561016155 is a wasteful number, since it uses less digits than its factorization.

615561016155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494426610.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 615561016155 in words is "six hundred fifteen billion, five hundred sixty-one million, sixteen thousand, one hundred fifty-five".