78372340461 has 12 divisors (see below), whose sum is σ = 114095867392. Its totient is φ = 51836822856.

The previous prime is 78372340447. The next prime is 78372340463. The reversal of 78372340461 is 16404327387.

78372340461 is a `hidden beast` number, since 7 + 83 + 72 + 3 + 40 + 461 = 666.

It is not a de Polignac number, because 78372340461 - 2⁵ = 78372340429 is a prime.

It is a super-2 number, since 2×78372340461² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78372340463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34282471 + ... + 34284756.

Almost surely, 2^78372340461 is an apocalyptic number.

It is an amenable number.

78372340461 is a deficient number, since it is larger than the sum of its proper divisors (35723526931).

78372340461 is a wasteful number, since it uses less digits than its factorization.

78372340461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68567360 (or 68567357 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 78372340461 in words is "seventy-eight billion, three hundred seventy-two million, three hundred forty thousand, four hundred sixty-one".