61465555556416 has 28 divisors (see below), whose sum is σ = 133058958336720. Its totient is φ = 27938888888960.

The previous prime is 61465555556389. The next prime is 61465555556417.

61465555556416 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×61465555556416² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (61465555556417) 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, 43654513186 + ... + 43654514593.

Almost surely, 2^{61465555556416} is an apocalyptic number.

It is an amenable number.

61465555556416 is an abundant number, since it is smaller than the sum of its proper divisors (71593402780304).

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

61465555556416 is a wasteful number, since it uses less digits than its factorization.

61465555556416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87309027802 (or 87309027792 counting only the distinct ones).

The product of its digits is 324000000, while the sum is 64.

The spelling of 61465555556416 in words is "sixty-one trillion, four hundred sixty-five billion, five hundred fifty-five million, five hundred fifty-six thousand, four hundred sixteen".