11901779251432 has 32 divisors (see below), whose sum is σ = 25644717745920. Its totient is φ = 5072581523520.

The previous prime is 11901779251403. The next prime is 11901779251511. The reversal of 11901779251432 is 23415297710911.

It is a self number, because there is not a number n which added to its sum of digits gives 11901779251432.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 587094208 + ... + 587114479.

It is an arithmetic number, because the mean of its divisors is an integer number (801397429560).

Almost surely, 2^{11901779251432} is an apocalyptic number.

It is an amenable number.

11901779251432 is an abundant number, since it is smaller than the sum of its proper divisors (13742938494488).

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

11901779251432 is a wasteful number, since it uses less digits than its factorization.

11901779251432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174208881 (or 1174208877 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 11901779251432 in words is "eleven trillion, nine hundred one billion, seven hundred seventy-nine million, two hundred fifty-one thousand, four hundred thirty-two".