61212163464 has 48 divisors (see below), whose sum is σ = 168592834800. Its totient is φ = 20058221664.

The previous prime is 61212163433. The next prime is 61212163471. The reversal of 61212163464 is 46436121216.

61212163464 is a `hidden beast` number, since 6 + 1 + 2 + 12 + 1 + 634 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7200574 + ... + 7209069.

It is an arithmetic number, because the mean of its divisors is an integer number (3512350725).

Almost surely, 2^61212163464 is an apocalyptic number.

It is an amenable number.

61212163464 is an abundant number, since it is smaller than the sum of its proper divisors (107380671336).

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

61212163464 is a wasteful number, since it uses less digits than its factorization.

61212163464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14409714 (or 14409707 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

It can be divided in two parts, 61212 and 163464, that added together give a square (224676 = 474²).

The spelling of 61212163464 in words is "sixty-one billion, two hundred twelve million, one hundred sixty-three thousand, four hundred sixty-four".