615606601561 has 48 divisors (see below), whose sum is σ = 764675875072. Its totient is φ = 485232768000.

The previous prime is 615606601559. The next prime is 615606601573. The reversal of 615606601561 is 165106606516.

It is not a de Polignac number, because 615606601561 - 2¹ = 615606601559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615606601261) 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 in 47 ways as a sum of consecutive naturals, for example, 18617335 + ... + 18650371.

Almost surely, 2^615606601561 is an apocalyptic number.

615606601561 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

615606601561 is a deficient number, since it is larger than the sum of its proper divisors (149069273511).

615606601561 is a wasteful number, since it uses less digits than its factorization.

615606601561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33290 (or 33273 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 615606601561 in words is "six hundred fifteen billion, six hundred six million, six hundred one thousand, five hundred sixty-one".