61791648252 has 48 divisors (see below), whose sum is σ = 147981212064. Its totient is φ = 20056192000.

The previous prime is 61791648251. The next prime is 61791648271. The reversal of 61791648252 is 25284619716.

It is a junction number, because it is equal to n+sod(n) for n = 61791648195 and 61791648204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61791648251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135802 + ... + 376862.

It is an arithmetic number, because the mean of its divisors is an integer number (3082941918).

Almost surely, 2^61791648252 is an apocalyptic number.

It is an amenable number.

61791648252 is an abundant number, since it is smaller than the sum of its proper divisors (86189563812).

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

61791648252 is a wasteful number, since it uses less digits than its factorization.

61791648252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241630 (or 241628 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The spelling of 61791648252 in words is "sixty-one billion, seven hundred ninety-one million, six hundred forty-eight thousand, two hundred fifty-two".