677027691869391 has 36 divisors (see below), whose sum is σ = 1030345749491968. Its totient is φ = 428328371604672.

The previous prime is 677027691869387. The next prime is 677027691869491. The reversal of 677027691869391 is 193968196720776.

677027691869391 is a `hidden beast` number, since 6 + 7 + 70 + 2 + 76 + 91 + 8 + 6 + 9 + 391 = 666.

It is not a de Polignac number, because 677027691869391 - 2² = 677027691869387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677027691869391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677027691869311) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 559249030 + ... + 560458323.

Almost surely, 2^{677027691869391} is an apocalyptic number.

677027691869391 is a deficient number, since it is larger than the sum of its proper divisors (353318057622577).

677027691869391 is a wasteful number, since it uses less digits than its factorization.

677027691869391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119707532 (or 1119707506 counting only the distinct ones).

The product of its (nonzero) digits is 2592487296, while the sum is 81.

The spelling of 677027691869391 in words is "six hundred seventy-seven trillion, twenty-seven billion, six hundred ninety-one million, eight hundred sixty-nine thousand, three hundred ninety-one".