76421958417 has 12 divisors (see below), whose sum is σ = 126156883840. Its totient is φ = 43669690488.

The previous prime is 76421958413. The next prime is 76421958449. The reversal of 76421958417 is 71485912467.

76421958417 is a `hidden beast` number, since 7 + 6 + 4 + 219 + 5 + 8 + 417 = 666.

It is not a de Polignac number, because 76421958417 - 2² = 76421958413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76421958413) 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, 606523417 + ... + 606523542.

Almost surely, 2^76421958417 is an apocalyptic number.

It is an amenable number.

76421958417 is a deficient number, since it is larger than the sum of its proper divisors (49734925423).

76421958417 is a wasteful number, since it uses less digits than its factorization.

76421958417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213046972 (or 1213046969 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 76421958417 in words is "seventy-six billion, four hundred twenty-one million, nine hundred fifty-eight thousand, four hundred seventeen".