61440294807 has 6 divisors (see below), whose sum is σ = 88747092512. Its totient is φ = 40960196532.

The previous prime is 61440294803. The next prime is 61440294809. The reversal of 61440294807 is 70849204416.

61440294807 is a `hidden beast` number, since 6 + 144 + 0 + 29 + 480 + 7 = 666.

It is not a de Polignac number, because 61440294807 - 2² = 61440294803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61440294803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3413349703 + ... + 3413349720.

Almost surely, 2^61440294807 is an apocalyptic number.

61440294807 is a deficient number, since it is larger than the sum of its proper divisors (27306797705).

61440294807 is a wasteful number, since it uses less digits than its factorization.

61440294807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826699429 (or 6826699426 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 61440294807 in words is "sixty-one billion, four hundred forty million, two hundred ninety-four thousand, eight hundred seven".