61436874617 has 16 divisors (see below), whose sum is σ = 65279358144. Its totient is φ = 57620160000.

The previous prime is 61436874613. The next prime is 61436874671. The reversal of 61436874617 is 71647863416.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61436874617 - 2² = 61436874613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61436874613) 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, 5828642 + ... + 5839172.

It is an arithmetic number, because the mean of its divisors is an integer number (4079959884).

Almost surely, 2^61436874617 is an apocalyptic number.

It is an amenable number.

61436874617 is a deficient number, since it is larger than the sum of its proper divisors (3842483527).

61436874617 is a wasteful number, since it uses less digits than its factorization.

61436874617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11720.

The product of its digits is 4064256, while the sum is 53.

The spelling of 61436874617 in words is "sixty-one billion, four hundred thirty-six million, eight hundred seventy-four thousand, six hundred seventeen".