1197078392391 has 16 divisors (see below), whose sum is σ = 1931420600064. Its totient is φ = 643806866304.

The previous prime is 1197078392387. The next prime is 1197078392399. The reversal of 1197078392391 is 1932938707911.

It is not a de Polignac number, because 1197078392391 - 2² = 1197078392387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197078392399) 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, 1676580025 + ... + 1676580738.

It is an arithmetic number, because the mean of its divisors is an integer number (120713787504).

Almost surely, 2^{1197078392391} is an apocalyptic number.

1197078392391 is a deficient number, since it is larger than the sum of its proper divisors (734342207673).

1197078392391 is a wasteful number, since it uses less digits than its factorization.

1197078392391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353160790.

The product of its (nonzero) digits is 5143824, while the sum is 60.

The spelling of 1197078392391 in words is "one trillion, one hundred ninety-seven billion, seventy-eight million, three hundred ninety-two thousand, three hundred ninety-one".