154402801668 has 72 divisors (see below), whose sum is σ = 404836432000. Its totient is φ = 51456785760.

The previous prime is 154402801661. The next prime is 154402801669. The reversal of 154402801668 is 866108204451.

It is a happy number.

154402801668 is a `hidden beast` number, since 1 + 5 + 4 + 402 + 80 + 166 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (154402801661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5574213 + ... + 5601843.

Almost surely, 2^154402801668 is an apocalyptic number.

154402801668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

154402801668 is an abundant number, since it is smaller than the sum of its proper divisors (250433630332).

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

154402801668 is a wasteful number, since it uses less digits than its factorization.

154402801668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33399 (or 33385 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 154402801668 in words is "one hundred fifty-four billion, four hundred two million, eight hundred one thousand, six hundred sixty-eight".