61898776423652 has 48 divisors (see below), whose sum is σ = 126787532995200. Its totient is φ = 25893976492800.

The previous prime is 61898776423639. The next prime is 61898776423699. The reversal of 61898776423652 is 25632467789816.

It is a self number, because there is not a number n which added to its sum of digits gives 61898776423652.

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, 138098777 + ... + 138546272.

It is an arithmetic number, because the mean of its divisors is an integer number (2641406937400).

Almost surely, 2^{61898776423652} is an apocalyptic number.

It is an amenable number.

61898776423652 is an abundant number, since it is smaller than the sum of its proper divisors (64888756571548).

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

61898776423652 is a wasteful number, since it uses less digits than its factorization.

61898776423652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276645252 (or 276645250 counting only the distinct ones).

The product of its digits is 1463132160, while the sum is 74.

The spelling of 61898776423652 in words is "sixty-one trillion, eight hundred ninety-eight billion, seven hundred seventy-six million, four hundred twenty-three thousand, six hundred fifty-two".