77678000131199 has 24 divisors (see below), whose sum is σ = 85141005541200. Its totient is φ = 70826619931392.

The previous prime is 77678000131183. The next prime is 77678000131231. The reversal of 77678000131199 is 99113100087677.

It is not a de Polignac number, because 77678000131199 - 2⁴ = 77678000131183 is a prime.

It is a super-2 number, since 2×77678000131199² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77678000131799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81062627 + ... + 82015275.

It is an arithmetic number, because the mean of its divisors is an integer number (3547541897550).

Almost surely, 2^{77678000131199} is an apocalyptic number.

77678000131199 is a deficient number, since it is larger than the sum of its proper divisors (7463005410001).

77678000131199 is a wasteful number, since it uses less digits than its factorization.

77678000131199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958571 (or 958558 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 59.

The spelling of 77678000131199 in words is "seventy-seven trillion, six hundred seventy-eight billion, one hundred thirty-one thousand, one hundred ninety-nine".