187640463755 has 8 divisors (see below), whose sum is σ = 226347450624. Its totient is φ = 149326441600.

The previous prime is 187640463749. The next prime is 187640463767. The reversal of 187640463755 is 557364046781.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 187640463755 - 2¹⁶ = 187640398219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 187640463755.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98240126 + ... + 98242035.

It is an arithmetic number, because the mean of its divisors is an integer number (28293431328).

Almost surely, 2^187640463755 is an apocalyptic number.

187640463755 is a deficient number, since it is larger than the sum of its proper divisors (38706986869).

187640463755 is a wasteful number, since it uses less digits than its factorization.

187640463755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196482357.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 187640463755 in words is "one hundred eighty-seven billion, six hundred forty million, four hundred sixty-three thousand, seven hundred fifty-five".