21500148092 has 24 divisors (see below), whose sum is σ = 38509363200. Its totient is φ = 10497591216.

The previous prime is 21500148091. The next prime is 21500148101. The reversal of 21500148092 is 29084100512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21500148091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868259 + ... + 892677.

It is an arithmetic number, because the mean of its divisors is an integer number (1604556800).

Almost surely, 2^21500148092 is an apocalyptic number.

It is an amenable number.

21500148092 is a deficient number, since it is larger than the sum of its proper divisors (17009215108).

21500148092 is a wasteful number, since it uses less digits than its factorization.

21500148092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29585 (or 29583 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 21500148092 in words is "twenty-one billion, five hundred million, one hundred forty-eight thousand, ninety-two".