21346577350 has 24 divisors (see below), whose sum is σ = 45376725168. Its totient is φ = 7318826400.

The previous prime is 21346577341. The next prime is 21346577353. The reversal of 21346577350 is 5377564312.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21346577297 and 21346577306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346577353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30494761 + ... + 30495460.

It is an arithmetic number, because the mean of its divisors is an integer number (1890696882).

Almost surely, 2^21346577350 is an apocalyptic number.

21346577350 is an abundant number, since it is smaller than the sum of its proper divisors (24030147818).

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

21346577350 is a wasteful number, since it uses less digits than its factorization.

21346577350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60990240 (or 60990235 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 43.

The spelling of 21346577350 in words is "twenty-one billion, three hundred forty-six million, five hundred seventy-seven thousand, three hundred fifty".