2542916401278 has 32 divisors (see below), whose sum is σ = 5551054733952. Its totient is φ = 770181631200.

The previous prime is 2542916401247. The next prime is 2542916401343. The reversal of 2542916401278 is 8721046192452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2542916401278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9849001 + ... + 10103892.

It is an arithmetic number, because the mean of its divisors is an integer number (173470460436).

Almost surely, 2^{2542916401278} is an apocalyptic number.

2542916401278 is an abundant number, since it is smaller than the sum of its proper divisors (3008138332674).

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

2542916401278 is a wasteful number, since it uses less digits than its factorization.

2542916401278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19954840.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 2542916401278 in words is "two trillion, five hundred forty-two billion, nine hundred sixteen million, four hundred one thousand, two hundred seventy-eight".