2691872381940 has 144 divisors (see below), whose sum is σ = 9004781181312. Its totient is φ = 598655764224.

The previous prime is 2691872381917. The next prime is 2691872381987. The reversal of 2691872381940 is 491832781962.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12264232 + ... + 12481791.

It is an arithmetic number, because the mean of its divisors is an integer number (62533202648).

Almost surely, 2^{2691872381940} is an apocalyptic number.

2691872381940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2691872381940 is an abundant number, since it is smaller than the sum of its proper divisors (6312908799372).

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

2691872381940 is a wasteful number, since it uses less digits than its factorization.

2691872381940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24746086 (or 24746077 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 2691872381940 in words is "two trillion, six hundred ninety-one billion, eight hundred seventy-two million, three hundred eighty-one thousand, nine hundred forty".