190487906078979 has 4 divisors (see below), whose sum is σ = 253983874771976. Its totient is φ = 126991937385984.

The previous prime is 190487906078927. The next prime is 190487906078989. The reversal of 190487906078979 is 979870609784091.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 190487906078979 - 2²⁴ = 190487889301763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190487906078989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31747984346494 + ... + 31747984346499.

It is an arithmetic number, because the mean of its divisors is an integer number (63495968692994).

Almost surely, 2^{190487906078979} is an apocalyptic number.

190487906078979 is a deficient number, since it is larger than the sum of its proper divisors (63495968692997).

190487906078979 is an equidigital number, since it uses as much as digits as its factorization.

190487906078979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63495968692996.

The product of its (nonzero) digits is 3456649728, while the sum is 84.

The spelling of 190487906078979 in words is "one hundred ninety trillion, four hundred eighty-seven billion, nine hundred six million, seventy-eight thousand, nine hundred seventy-nine".