191613481480 has 32 divisors (see below), whose sum is σ = 434023839000. Its totient is φ = 76130991616.

The previous prime is 191613481469. The next prime is 191613481513. The reversal of 191613481480 is 84184316191.

It can be written as a sum of positive squares in 4 ways, for example, as 132078457476 + 59535024004 = 363426^2 + 243998^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 191613481480.

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, 16068997 + ... + 16080916.

Almost surely, 2^191613481480 is an apocalyptic number.

191613481480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191613481480 is an abundant number, since it is smaller than the sum of its proper divisors (242410357520).

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

191613481480 is a wasteful number, since it uses less digits than its factorization.

191613481480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32150073 (or 32150069 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

It can be divided in two parts, 19161 and 3481480, that added together give a square (3500641 = 1871²).

The spelling of 191613481480 in words is "one hundred ninety-one billion, six hundred thirteen million, four hundred eighty-one thousand, four hundred eighty".