61436874616 has 32 divisors (see below), whose sum is σ = 124200840960. Its totient is φ = 28322197632.

The previous prime is 61436874613. The next prime is 61436874671. The reversal of 61436874616 is 61647863416.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 257560 + ... + 434983.

It is an arithmetic number, because the mean of its divisors is an integer number (3881276280).

Almost surely, 2^61436874616 is an apocalyptic number.

It is an amenable number.

61436874616 is an abundant number, since it is smaller than the sum of its proper divisors (62763966344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61436874616 is a wasteful number, since it uses less digits than its factorization.

61436874616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693415 (or 693411 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 61436874616 in words is "sixty-one billion, four hundred thirty-six million, eight hundred seventy-four thousand, six hundred sixteen".