61400786180732 has 24 divisors (see below), whose sum is σ = 107756298376272. Its totient is φ = 30613380387200.

The previous prime is 61400786180711. The next prime is 61400786180779. The reversal of 61400786180732 is 23708168700416.

It is a happy number.

It is a super-2 number, since 2×61400786180732² (a number of 28 digits) contains 22 as substring.

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, 11229083 + ... + 15776370.

It is an arithmetic number, because the mean of its divisors is an integer number (4489845765678).

Almost surely, 2^{61400786180732} is an apocalyptic number.

It is an amenable number.

61400786180732 is a deficient number, since it is larger than the sum of its proper divisors (46355512195540).

61400786180732 is a wasteful number, since it uses less digits than its factorization.

61400786180732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27007069 (or 27007067 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 61400786180732 in words is "sixty-one trillion, four hundred billion, seven hundred eighty-six million, one hundred eighty thousand, seven hundred thirty-two".