615440671051 has 4 divisors (see below), whose sum is σ = 618200494912. Its totient is φ = 612680847192.

The previous prime is 615440671033. The next prime is 615440671117. The reversal of 615440671051 is 150176044516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 615440671051 - 2⁹ = 615440670539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 615440670995 and 615440671013.

It is not an unprimeable number, because it can be changed into a prime (615440672051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379911596 + ... + 1379912041.

It is an arithmetic number, because the mean of its divisors is an integer number (154550123728).

Almost surely, 2^615440671051 is an apocalyptic number.

615440671051 is a deficient number, since it is larger than the sum of its proper divisors (2759823861).

615440671051 is a wasteful number, since it uses less digits than its factorization.

615440671051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759823860.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 615440671051 in words is "six hundred fifteen billion, four hundred forty million, six hundred seventy-one thousand, fifty-one".