2778072169900 has 18 divisors (see below), whose sum is σ = 6028416608900. Its totient is φ = 1111228867920.

The previous prime is 2778072169883. The next prime is 2778072169907. The reversal of 2778072169900 is 99612708772.

It is not an unprimeable number, because it can be changed into a prime (2778072169907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13890360750 + ... + 13890360949.

Almost surely, 2^{2778072169900} is an apocalyptic number.

2778072169900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2778072169900 is an abundant number, since it is smaller than the sum of its proper divisors (3250344439000).

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

2778072169900 is a wasteful number, since it uses less digits than its factorization.

2778072169900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27780721713 (or 27780721706 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 2778072169900 in words is "two trillion, seven hundred seventy-eight billion, seventy-two million, one hundred sixty-nine thousand, nine hundred".