155213072263 has 8 divisors (see below), whose sum is σ = 159416698032. Its totient is φ = 151009903296.

The previous prime is 155213072141. The next prime is 155213072293. The reversal of 155213072263 is 362270312551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155213072263 - 2²¹ = 155210975111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155213072293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641331 + ... + 849547.

It is an arithmetic number, because the mean of its divisors is an integer number (19927087254).

Almost surely, 2^155213072263 is an apocalyptic number.

155213072263 is a deficient number, since it is larger than the sum of its proper divisors (4203625769).

155213072263 is a wasteful number, since it uses less digits than its factorization.

155213072263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228401.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 155213072263 in words is "one hundred fifty-five billion, two hundred thirteen million, seventy-two thousand, two hundred sixty-three".