61475022840 has 384 divisors, whose sum is σ = 241756462080. Its totient is φ = 12218173440.

The previous prime is 61475022827. The next prime is 61475022859. The reversal of 61475022840 is 4822057416.

61475022840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2324572 + ... + 2350868.

It is an arithmetic number, because the mean of its divisors is an integer number (629574120).

Almost surely, 2^61475022840 is an apocalyptic number.

61475022840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61475022840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120878231040).

61475022840 is an abundant number, since it is smaller than the sum of its proper divisors (180281439240).

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

61475022840 is a wasteful number, since it uses less digits than its factorization.

61475022840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26363 (or 26348 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 61475022840 in words is "sixty-one billion, four hundred seventy-five million, twenty-two thousand, eight hundred forty".