11907178877 has 12 divisors (see below), whose sum is σ = 13407282588. Its totient is φ = 10560686400.

The previous prime is 11907178853. The next prime is 11907178889. The reversal of 11907178877 is 77887170911.

It can be written as a sum of positive squares in 2 ways, for example, as 3432319396 + 8474859481 = 58586^2 + 92059^2 .

It is not a de Polignac number, because 11907178877 - 2¹² = 11907174781 is a prime.

It is a super-2 number, since 2×11907178877² (a number of 21 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 (11907178807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1195118 + ... + 1205039.

It is an arithmetic number, because the mean of its divisors is an integer number (1117273549).

Almost surely, 2^11907178877 is an apocalyptic number.

It is an amenable number.

11907178877 is a deficient number, since it is larger than the sum of its proper divisors (1500103711).

11907178877 is a wasteful number, since it uses less digits than its factorization.

11907178877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400220 (or 2400209 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 56.

The spelling of 11907178877 in words is "eleven billion, nine hundred seven million, one hundred seventy-eight thousand, eight hundred seventy-seven".