155623361250 has 160 divisors (see below), whose sum is σ = 445217984640. Its totient is φ = 35513280000.

The previous prime is 155623361221. The next prime is 155623361279. The reversal of 155623361250 is 52163326551.

It is an interprime number because it is at equal distance from previous prime (155623361221) and next prime (155623361279).

It is a junction number, because it is equal to n+sod(n) for n = 155623361199 and 155623361208.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17346766 + ... + 17355734.

It is an arithmetic number, because the mean of its divisors is an integer number (2782612404).

Almost surely, 2^155623361250 is an apocalyptic number.

155623361250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155623361250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222608992320).

155623361250 is an abundant number, since it is smaller than the sum of its proper divisors (289594623390).

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

155623361250 is an equidigital number, since it uses as much as digits as its factorization.

155623361250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662 (or 9647 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 155623361250 in words is "one hundred fifty-five billion, six hundred twenty-three million, three hundred sixty-one thousand, two hundred fifty".