346621545540 has 240 divisors, whose sum is σ = 1140044653440. Its totient is φ = 87992593920.

The previous prime is 346621545527. The next prime is 346621545553. The reversal of 346621545540 is 45545126643.

346621545540 is a `hidden beast` number, since 3 + 4 + 6 + 62 + 1 + 5 + 45 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (346621545527) and next prime (346621545553).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 7839816 + ... + 7883904.

It is an arithmetic number, because the mean of its divisors is an integer number (4750186056).

Almost surely, 2^346621545540 is an apocalyptic number.

346621545540 is a gapful number since it is divisible by the number (30) 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 346621545540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570022326720).

346621545540 is an abundant number, since it is smaller than the sum of its proper divisors (793423107900).

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

346621545540 is a wasteful number, since it uses less digits than its factorization.

346621545540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44344 (or 44333 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 346621545540 in words is "three hundred forty-six billion, six hundred twenty-one million, five hundred forty-five thousand, five hundred forty".