155195814601 has 9 divisors (see below), whose sum is σ = 158200570549. Its totient is φ = 152247106336.

The previous prime is 155195814589. The next prime is 155195814619. The reversal of 155195814601 is 106418591551.

The square root of 155195814601 is 393949.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 14435782201 + 140760032400 = 120149^2 + 375180^2 .

It is not a de Polignac number, because 155195814601 - 2¹¹ = 155195812553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155195814901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20875581 + ... + 20883013.

Almost surely, 2^155195814601 is an apocalyptic number.

155195814601 is the 393949-th square number.

155195814601 is the 196975-th centered octagonal number.

It is an amenable number.

155195814601 is a deficient number, since it is larger than the sum of its proper divisors (3004755948).

155195814601 is an frugal number, since it uses more digits than its factorization.

155195814601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14972 (or 7486 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 46.

The spelling of 155195814601 in words is "one hundred fifty-five billion, one hundred ninety-five million, eight hundred fourteen thousand, six hundred one".