155261267162764 has 144 divisors (see below), whose sum is σ = 329125783956480. Its totient is φ = 63822122017920.

The previous prime is 155261267162707. The next prime is 155261267162819. The reversal of 155261267162764 is 467261762162551.

It is a super-2 number, since 2×155261267162764² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2044729879 + ... + 2044805809.

It is an arithmetic number, because the mean of its divisors is an integer number (2285595721920).

Almost surely, 2^{155261267162764} is an apocalyptic number.

155261267162764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155261267162764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164562891978240).

155261267162764 is an abundant number, since it is smaller than the sum of its proper divisors (173864516793716).

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

155261267162764 is a wasteful number, since it uses less digits than its factorization.

155261267162764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78348 (or 78339 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 61.

The spelling of 155261267162764 in words is "one hundred fifty-five trillion, two hundred sixty-one billion, two hundred sixty-seven million, one hundred sixty-two thousand, seven hundred sixty-four".