77465216642407 has 16 divisors (see below), whose sum is σ = 84635268157440. Its totient is φ = 70316532727200.

The previous prime is 77465216642399. The next prime is 77465216642419. The reversal of 77465216642407 is 70424661256477.

It is a cyclic number.

It is not a de Polignac number, because 77465216642407 - 2³ = 77465216642399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77465216649407) 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, 18976057 + ... + 22694077.

It is an arithmetic number, because the mean of its divisors is an integer number (5289704259840).

Almost surely, 2^{77465216642407} is an apocalyptic number.

77465216642407 is a deficient number, since it is larger than the sum of its proper divisors (7170051515033).

77465216642407 is a wasteful number, since it uses less digits than its factorization.

77465216642407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720894.

The product of its (nonzero) digits is 94832640, while the sum is 61.

The spelling of 77465216642407 in words is "seventy-seven trillion, four hundred sixty-five billion, two hundred sixteen million, six hundred forty-two thousand, four hundred seven".