20615194332 has 240 divisors, whose sum is σ = 59318730240. Its totient is φ = 6219618048.

The previous prime is 20615194219. The next prime is 20615194349. The reversal of 20615194332 is 23349151602.

20615194332 is a `hidden beast` number, since 2 + 0 + 615 + 1 + 9 + 4 + 3 + 32 = 666.

It is a super-2 number, since 2×20615194332² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12440448 + ... + 12442104.

It is an arithmetic number, because the mean of its divisors is an integer number (247161376).

Almost surely, 2^20615194332 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 20615194332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29659365120).

20615194332 is an abundant number, since it is smaller than the sum of its proper divisors (38703535908).

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

20615194332 is a wasteful number, since it uses less digits than its factorization.

20615194332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 20615194332 in words is "twenty billion, six hundred fifteen million, one hundred ninety-four thousand, three hundred thirty-two".