77342297087 has 16 divisors (see below), whose sum is σ = 88127516160. Its totient is φ = 67188712800.

The previous prime is 77342297059. The next prime is 77342297107. The reversal of 77342297087 is 78079224377.

It is not a de Polignac number, because 77342297087 - 2⁶ = 77342297023 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 (77342297587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112589 + ... + 409097.

It is an arithmetic number, because the mean of its divisors is an integer number (5507969760).

Almost surely, 2^77342297087 is an apocalyptic number.

77342297087 is a deficient number, since it is larger than the sum of its proper divisors (10785219073).

77342297087 is a wasteful number, since it uses less digits than its factorization.

77342297087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297574.

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 77342297087 in words is "seventy-seven billion, three hundred forty-two million, two hundred ninety-seven thousand, eighty-seven".