61405683480 has 48 divisors (see below), whose sum is σ = 199568472480. Its totient is φ = 16374848832.

The previous prime is 61405683457. The next prime is 61405683517. The reversal of 61405683480 is 8438650416.

61405683480 is a `hidden beast` number, since 6 + 1 + 4 + 0 + 568 + 3 + 4 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85285312 + ... + 85286031.

It is an arithmetic number, because the mean of its divisors is an integer number (4157676510).

Almost surely, 2^61405683480 is an apocalyptic number.

61405683480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61405683480 is an abundant number, since it is smaller than the sum of its proper divisors (138162789000).

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

61405683480 is a wasteful number, since it uses less digits than its factorization.

61405683480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170571360 (or 170571353 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 61405683480 in words is "sixty-one billion, four hundred five million, six hundred eighty-three thousand, four hundred eighty".