61471742892 has 48 divisors (see below), whose sum is σ = 173567278080. Its totient is φ = 16530216192.

The previous prime is 61471742887. The next prime is 61471742939. The reversal of 61471742892 is 29824717416.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 21522292 + ... + 21525147.

It is an arithmetic number, because the mean of its divisors is an integer number (3615984960).

Almost surely, 2^61471742892 is an apocalyptic number.

It is an amenable number.

61471742892 is an abundant number, since it is smaller than the sum of its proper divisors (112095535188).

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

61471742892 is a wasteful number, since it uses less digits than its factorization.

61471742892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43047470 (or 43047468 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The spelling of 61471742892 in words is "sixty-one billion, four hundred seventy-one million, seven hundred forty-two thousand, eight hundred ninety-two".