11899478707 has 4 divisors (see below), whose sum is σ = 12525767080. Its totient is φ = 11273190336.

The previous prime is 11899478699. The next prime is 11899478761. The reversal of 11899478707 is 70787499811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70787499811 = 7 ⋅10112499973.

It is a cyclic number.

It is not a de Polignac number, because 11899478707 - 2³ = 11899478699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11899470707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313144158 + ... + 313144195.

It is an arithmetic number, because the mean of its divisors is an integer number (3131441770).

Almost surely, 2^11899478707 is an apocalyptic number.

11899478707 is a deficient number, since it is larger than the sum of its proper divisors (626288373).

11899478707 is an equidigital number, since it uses as much as digits as its factorization.

11899478707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626288372.

The product of its (nonzero) digits is 7112448, while the sum is 61.

The spelling of 11899478707 in words is "eleven billion, eight hundred ninety-nine million, four hundred seventy-eight thousand, seven hundred seven".