61219871232 has 160 divisors (see below), whose sum is σ = 185971972032. Its totient is φ = 17728733184.

The previous prime is 61219871173. The next prime is 61219871257. The reversal of 61219871232 is 23217891216.

It is a super-2 number, since 2×61219871232² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249283 + ... + 429629.

Almost surely, 2^61219871232 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 61219871232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92985986016).

61219871232 is an abundant number, since it is smaller than the sum of its proper divisors (124752100800).

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

61219871232 is a wasteful number, since it uses less digits than its factorization.

61219871232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180398 (or 180382 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The spelling of 61219871232 in words is "sixty-one billion, two hundred nineteen million, eight hundred seventy-one thousand, two hundred thirty-two".