70615609651 has 4 divisors (see below), whose sum is σ = 70619456952. Its totient is φ = 70611762352.

The previous prime is 70615609643. The next prime is 70615609679. The reversal of 70615609651 is 15690651607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15690651607 = 401 ⋅39128807.

It is a cyclic number.

It is not a de Polignac number, because 70615609651 - 2³ = 70615609643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70615609451) 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, 1895986 + ... + 1932871.

It is an arithmetic number, because the mean of its divisors is an integer number (17654864238).

Almost surely, 2^70615609651 is an apocalyptic number.

70615609651 is a deficient number, since it is larger than the sum of its proper divisors (3847301).

70615609651 is a wasteful number, since it uses less digits than its factorization.

70615609651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847300.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 70615609651 in words is "seventy billion, six hundred fifteen million, six hundred nine thousand, six hundred fifty-one".