61372272192 has 448 divisors, whose sum is σ = 214364620800. Its totient is φ = 15028715520.

The previous prime is 61372272173. The next prime is 61372272233. The reversal of 61372272192 is 29127227316.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18433984 + ... + 18437312.

Almost surely, 2^61372272192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61372272192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107182310400).

61372272192 is an abundant number, since it is smaller than the sum of its proper divisors (152992348608).

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

61372272192 is a wasteful number, since it uses less digits than its factorization.

61372272192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434 (or 3424 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The spelling of 61372272192 in words is "sixty-one billion, three hundred seventy-two million, two hundred seventy-two thousand, one hundred ninety-two".