155551451101 has 16 divisors (see below), whose sum is σ = 172074548800. Its totient is φ = 140047221888.

The previous prime is 155551451059. The next prime is 155551451117. The reversal of 155551451101 is 101154155551.

It is a cyclic number.

It is not a de Polignac number, because 155551451101 - 2³³ = 146961516509 is a prime.

It is a super-2 number, since 2×155551451101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155551451131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542656 + ... + 2603113.

It is an arithmetic number, because the mean of its divisors is an integer number (10754659300).

Almost surely, 2^155551451101 is an apocalyptic number.

It is an amenable number.

155551451101 is a deficient number, since it is larger than the sum of its proper divisors (16523097699).

155551451101 is a wasteful number, since it uses less digits than its factorization.

155551451101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145868.

The product of its (nonzero) digits is 12500, while the sum is 34.

The spelling of 155551451101 in words is "one hundred fifty-five billion, five hundred fifty-one million, four hundred fifty-one thousand, one hundred one".