11777256542 has 4 divisors (see below), whose sum is σ = 17665884816. Its totient is φ = 5888628270.

The previous prime is 11777256529. The next prime is 11777256599. The reversal of 11777256542 is 24565277711.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2944314134 + ... + 2944314137.

It is an arithmetic number, because the mean of its divisors is an integer number (4416471204).

Almost surely, 2^11777256542 is an apocalyptic number.

11777256542 is a deficient number, since it is larger than the sum of its proper divisors (5888628274).

11777256542 is an equidigital number, since it uses as much as digits as its factorization.

11777256542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888628273.

The product of its digits is 823200, while the sum is 47.

The spelling of 11777256542 in words is "eleven billion, seven hundred seventy-seven million, two hundred fifty-six thousand, five hundred forty-two".