61880063739 has 8 divisors (see below), whose sum is σ = 88853424912. Its totient is φ = 38080039200.

The previous prime is 61880063717. The next prime is 61880063753. The reversal of 61880063739 is 93736008816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61880063739 - 2⁷ = 61880063611 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 61880063691 and 61880063700.

It is not an unprimeable number, because it can be changed into a prime (61880063779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793334112 + ... + 793334189.

It is an arithmetic number, because the mean of its divisors is an integer number (11106678114).

Almost surely, 2^61880063739 is an apocalyptic number.

61880063739 is a deficient number, since it is larger than the sum of its proper divisors (26973361173).

61880063739 is a wasteful number, since it uses less digits than its factorization.

61880063739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586668317.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 61880063739 in words is "sixty-one billion, eight hundred eighty million, sixty-three thousand, seven hundred thirty-nine".