77940695497 has 8 divisors (see below), whose sum is σ = 89077233600. Its totient is φ = 66804695664.

The previous prime is 77940695491. The next prime is 77940695501. The reversal of 77940695497 is 79459604977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77940695497 - 2¹¹ = 77940693449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77940695491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248379 + ... + 466447.

It is an arithmetic number, because the mean of its divisors is an integer number (11134654200).

Almost surely, 2^77940695497 is an apocalyptic number.

It is an amenable number.

77940695497 is a deficient number, since it is larger than the sum of its proper divisors (11136538103).

77940695497 is a wasteful number, since it uses less digits than its factorization.

77940695497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269135.

The product of its (nonzero) digits is 120022560, while the sum is 67.

The spelling of 77940695497 in words is "seventy-seven billion, nine hundred forty million, six hundred ninety-five thousand, four hundred ninety-seven".