21548142070 has 64 divisors (see below), whose sum is σ = 48113565696. Its totient is φ = 6765897600.

The previous prime is 21548142061. The next prime is 21548142113. The reversal of 21548142070 is 7024184512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22345 + ... + 208795.

It is an arithmetic number, because the mean of its divisors is an integer number (751774464).

Almost surely, 2^21548142070 is an apocalyptic number.

21548142070 is an abundant number, since it is smaller than the sum of its proper divisors (26565423626).

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

21548142070 is a wasteful number, since it uses less digits than its factorization.

21548142070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186605.

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 21548142070 in words is "twenty-one billion, five hundred forty-eight million, one hundred forty-two thousand, seventy".