61801703997 has 32 divisors (see below), whose sum is σ = 94687895040. Its totient is φ = 35460504000.

The previous prime is 61801703983. The next prime is 61801704059. The reversal of 61801703997 is 79930710816.

It is not a de Polignac number, because 61801703997 - 2²⁶ = 61734595133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61802703997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 927747 + ... + 992127.

It is an arithmetic number, because the mean of its divisors is an integer number (2958996720).

Almost surely, 2^61801703997 is an apocalyptic number.

It is an amenable number.

61801703997 is a deficient number, since it is larger than the sum of its proper divisors (32886191043).

61801703997 is a wasteful number, since it uses less digits than its factorization.

61801703997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65945.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 61801703997 in words is "sixty-one billion, eight hundred one million, seven hundred three thousand, nine hundred ninety-seven".