61403896180 has 24 divisors (see below), whose sum is σ = 140670744480. Its totient is φ = 22328689440.

The previous prime is 61403896163. The next prime is 61403896193. The reversal of 61403896180 is 8169830416.

It is a self number, because there is not a number n which added to its sum of digits gives 61403896180.

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, 139554090 + ... + 139554529.

It is an arithmetic number, because the mean of its divisors is an integer number (5861281020).

Almost surely, 2^61403896180 is an apocalyptic number.

It is an amenable number.

61403896180 is an abundant number, since it is smaller than the sum of its proper divisors (79266848300).

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

61403896180 is a wasteful number, since it uses less digits than its factorization.

61403896180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279108639 (or 279108637 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 61403896180 in words is "sixty-one billion, four hundred three million, eight hundred ninety-six thousand, one hundred eighty".