155121055105372 has 12 divisors (see below), whose sum is σ = 271518888250960. Its totient is φ = 77544229890816.

The previous prime is 155121055105349. The next prime is 155121055105381. The reversal of 155121055105372 is 273501550121551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4074394053 + ... + 4074432124.

Almost surely, 2^{155121055105372} is an apocalyptic number.

It is an amenable number.

155121055105372 is a deficient number, since it is larger than the sum of its proper divisors (116397833145588).

155121055105372 is a wasteful number, since it uses less digits than its factorization.

155121055105372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8148830940 (or 8148830938 counting only the distinct ones).

The product of its (nonzero) digits is 262500, while the sum is 43.

The spelling of 155121055105372 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, fifty-five million, one hundred five thousand, three hundred seventy-two".