190640155456 has 28 divisors (see below), whose sum is σ = 391346443620. Its totient is φ = 92033177600.

The previous prime is 190640155417. The next prime is 190640155457. The reversal of 190640155456 is 654551046091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 142159161600 + 48480993856 = 377040^2 + 220184^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190640155457) 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, 51355945 + ... + 51359656.

Almost surely, 2^190640155456 is an apocalyptic number.

190640155456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

190640155456 is an abundant number, since it is smaller than the sum of its proper divisors (200706288164).

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

190640155456 is a wasteful number, since it uses less digits than its factorization.

190640155456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102715642 (or 102715632 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 190640155456 in words is "one hundred ninety billion, six hundred forty million, one hundred fifty-five thousand, four hundred fifty-six".