21295041075 has 432 divisors, whose sum is σ = 53131286880. Its totient is φ = 8302694400.

The previous prime is 21295041071. The next prime is 21295041101. The reversal of 21295041075 is 57014059212.

21295041075 is a `hidden beast` number, since 2 + 129 + 50 + 410 + 75 = 666.

It is not a de Polignac number, because 21295041075 - 2² = 21295041071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21295041071) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 68035119 + ... + 68035431.

It is an arithmetic number, because the mean of its divisors is an integer number (122989090).

Almost surely, 2^21295041075 is an apocalyptic number.

21295041075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21295041075 is an abundant number, since it is smaller than the sum of its proper divisors (31836245805).

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

21295041075 is a wasteful number, since it uses less digits than its factorization.

21295041075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 21295041075 in words is "twenty-one billion, two hundred ninety-five million, forty-one thousand, seventy-five".