193666157040 has 80 divisors (see below), whose sum is σ = 606554490528. Its totient is φ = 51111886848.

The previous prime is 193666157033. The next prime is 193666157053. The reversal of 193666157040 is 40751666391.

193666157040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4136217 + ... + 4182776.

Almost surely, 2^193666157040 is an apocalyptic number.

193666157040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193666157040 is an abundant number, since it is smaller than the sum of its proper divisors (412888333488).

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

193666157040 is a wasteful number, since it uses less digits than its factorization.

193666157040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8319106 (or 8319100 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 193666157040 in words is "one hundred ninety-three billion, six hundred sixty-six million, one hundred fifty-seven thousand, forty".