61040617407 has 24 divisors (see below), whose sum is σ = 109925961600. Its totient is φ = 31709411280.

The previous prime is 61040617403. The next prime is 61040617423. The reversal of 61040617407 is 70471604016.

It is not a de Polignac number, because 61040617407 - 2² = 61040617403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61040617403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44040157 + ... + 44041542.

It is an arithmetic number, because the mean of its divisors is an integer number (4580248400).

Almost surely, 2^61040617407 is an apocalyptic number.

61040617407 is a deficient number, since it is larger than the sum of its proper divisors (48885344193).

61040617407 is a wasteful number, since it uses less digits than its factorization.

61040617407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88081723 (or 88081720 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 61040617407 in words is "sixty-one billion, forty million, six hundred seventeen thousand, four hundred seven".