11900497278 has 32 divisors (see below), whose sum is σ = 25059824640. Its totient is φ = 3757129920.

The previous prime is 11900497277. The next prime is 11900497313. The reversal of 11900497278 is 87279400911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900497277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569658 + ... + 590178.

It is an arithmetic number, because the mean of its divisors is an integer number (783119520).

Almost surely, 2^11900497278 is an apocalyptic number.

11900497278 is an abundant number, since it is smaller than the sum of its proper divisors (13159327362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11900497278 is a wasteful number, since it uses less digits than its factorization.

11900497278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25632.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 11900497278 in words is "eleven billion, nine hundred million, four hundred ninety-seven thousand, two hundred seventy-eight".