61407225236 has 24 divisors (see below), whose sum is σ = 123901310400. Its totient is φ = 26084483712.

The previous prime is 61407225149. The next prime is 61407225263. The reversal of 61407225236 is 63252270416.

61407225236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61407225236² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61407225236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9700886 + ... + 9707213.

It is an arithmetic number, because the mean of its divisors is an integer number (5162554600).

Almost surely, 2^61407225236 is an apocalyptic number.

It is an amenable number.

61407225236 is an abundant number, since it is smaller than the sum of its proper divisors (62494085164).

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

61407225236 is a wasteful number, since it uses less digits than its factorization.

61407225236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408223 (or 19408221 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 61407225236 in words is "sixty-one billion, four hundred seven million, two hundred twenty-five thousand, two hundred thirty-six".