21435454050 has 48 divisors (see below), whose sum is σ = 53953383072. Its totient is φ = 5630803200.

The previous prime is 21435454043. The next prime is 21435454099. The reversal of 21435454050 is 5045453412.

It is a super-2 number, since 2×21435454050² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1056391 + ... + 1076490.

It is an arithmetic number, because the mean of its divisors is an integer number (1124028814).

Almost surely, 2^21435454050 is an apocalyptic number.

21435454050 is an abundant number, since it is smaller than the sum of its proper divisors (32517929022).

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

21435454050 is a wasteful number, since it uses less digits than its factorization.

21435454050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132963 (or 2132958 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 21435454050 in words is "twenty-one billion, four hundred thirty-five million, four hundred fifty-four thousand, fifty".