49687717683640 has 16 divisors (see below), whose sum is σ = 111797364788280. Its totient is φ = 19875087073440.

The previous prime is 49687717683629. The next prime is 49687717683743. The reversal of 49687717683640 is 4638671778694.

It is a super-2 number, since 2×49687717683640² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621096471006 + ... + 621096471085.

Almost surely, 2^{49687717683640} is an apocalyptic number.

49687717683640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49687717683640 is an abundant number, since it is smaller than the sum of its proper divisors (62109647104640).

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

49687717683640 is a wasteful number, since it uses less digits than its factorization.

49687717683640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242192942102 (or 1242192942098 counting only the distinct ones).

The product of its (nonzero) digits is 2048385024, while the sum is 76.

The spelling of 49687717683640 in words is "forty-nine trillion, six hundred eighty-seven billion, seven hundred seventeen million, six hundred eighty-three thousand, six hundred forty".