2639685373020 has 36 divisors (see below), whose sum is σ = 8007045632040. Its totient is φ = 703916099424.

The previous prime is 2639685373001. The next prime is 2639685373027. The reversal of 2639685373020 is 203735869362.

It is a happy number.

2639685373020 is a `hidden beast` number, since 26 + 3 + 9 + 68 + 537 + 3 + 0 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639685373027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7332459190 + ... + 7332459549.

Almost surely, 2^{2639685373020} is an apocalyptic number.

2639685373020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2639685373020 is an abundant number, since it is smaller than the sum of its proper divisors (5367360259020).

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

2639685373020 is a wasteful number, since it uses less digits than its factorization.

2639685373020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14664918754 (or 14664918749 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 54.

The spelling of 2639685373020 in words is "two trillion, six hundred thirty-nine billion, six hundred eighty-five million, three hundred seventy-three thousand, twenty".