155694706668 has 18 divisors (see below), whose sum is σ = 393561619724. Its totient is φ = 51898235544.

The previous prime is 155694706667. The next prime is 155694706691. The reversal of 155694706668 is 866607496551.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (155694706667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2162426446 + ... + 2162426517.

Almost surely, 2^155694706668 is an apocalyptic number.

155694706668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155694706668 is an abundant number, since it is smaller than the sum of its proper divisors (237866913056).

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

155694706668 is a wasteful number, since it uses less digits than its factorization.

155694706668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324852973 (or 4324852968 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 155694706668 in words is "one hundred fifty-five billion, six hundred ninety-four million, seven hundred six thousand, six hundred sixty-eight".