345621560550 has 192 divisors, whose sum is σ = 1032488916480. Its totient is φ = 74744017920.

The previous prime is 345621560503. The next prime is 345621560551. The reversal of 345621560550 is 55065126543.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345621560551) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15889282 + ... + 15911018.

It is an arithmetic number, because the mean of its divisors is an integer number (5377546440).

Almost surely, 2^345621560550 is an apocalyptic number.

345621560550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 345621560550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516244458240).

345621560550 is an abundant number, since it is smaller than the sum of its proper divisors (686867355930).

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

345621560550 is a wasteful number, since it uses less digits than its factorization.

345621560550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22575 (or 22570 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 345621560550 in words is "three hundred forty-five billion, six hundred twenty-one million, five hundred sixty thousand, five hundred fifty".