61426609632 has 96 divisors (see below), whose sum is σ = 179545766400. Its totient is φ = 20431557504.

The previous prime is 61426609591. The next prime is 61426609639. The reversal of 61426609632 is 23690662416.

61426609632 is a `hidden beast` number, since 6 + 1 + 4 + 2 + 6 + 6 + 0 + 9 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61426609639) 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, 327369 + ... + 479607.

It is an arithmetic number, because the mean of its divisors is an integer number (1870268400).

Almost surely, 2^61426609632 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 61426609632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89772883200).

61426609632 is an abundant number, since it is smaller than the sum of its proper divisors (118119156768).

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

61426609632 is a wasteful number, since it uses less digits than its factorization.

61426609632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152725 (or 152711 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 61426609632 in words is "sixty-one billion, four hundred twenty-six million, six hundred nine thousand, six hundred thirty-two".