61497679416 has 16 divisors (see below), whose sum is σ = 153744198600. Its totient is φ = 20499226464.

The previous prime is 61497679343. The next prime is 61497679423.

61497679416 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×61497679416² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61497679416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281201631 + ... + 1281201678.

Almost surely, 2^61497679416 is an apocalyptic number.

It is an amenable number.

61497679416 is an abundant number, since it is smaller than the sum of its proper divisors (92246519184).

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

61497679416 is a wasteful number, since it uses less digits than its factorization.

61497679416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562403318 (or 2562403314 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 60.

The spelling of 61497679416 in words is "sixty-one billion, four hundred ninety-seven million, six hundred seventy-nine thousand, four hundred sixteen".