155446167656664 has 48 divisors (see below), whose sum is σ = 435517280078400. Its totient is φ = 50028651658944.

The previous prime is 155446167656617. The next prime is 155446167656687. The reversal of 155446167656664 is 466656761644551.

It is a super-2 number, since 2×155446167656664² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 155446167656592 and 155446167656601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37223697064 + ... + 37223701239.

It is an arithmetic number, because the mean of its divisors is an integer number (9073276668300).

Almost surely, 2^{155446167656664} is an apocalyptic number.

It is an amenable number.

155446167656664 is an abundant number, since it is smaller than the sum of its proper divisors (280071112421736).

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

155446167656664 is a wasteful number, since it uses less digits than its factorization.

155446167656664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74447398344 (or 74447398337 counting only the distinct ones).

The product of its digits is 2612736000, while the sum is 72.

The spelling of 155446167656664 in words is "one hundred fifty-five trillion, four hundred forty-six billion, one hundred sixty-seven million, six hundred fifty-six thousand, six hundred sixty-four".