101025543123 has 12 divisors (see below), whose sum is σ = 145929578080. Its totient is φ = 67348611216.

The previous prime is 101025543103. The next prime is 101025543161. The reversal of 101025543123 is 321345520101.

101025543123 is a `hidden beast` number, since 1 + 0 + 102 + 5 + 543 + 12 + 3 = 666.

It is not a de Polignac number, because 101025543123 - 2¹⁷ = 101025412051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101025543103) 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, 287190 + ... + 533412.

Almost surely, 2^101025543123 is an apocalyptic number.

101025543123 is a deficient number, since it is larger than the sum of its proper divisors (44904034957).

101025543123 is a wasteful number, since it uses less digits than its factorization.

101025543123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291818 (or 291815 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 101025543123 in words is "one hundred one billion, twenty-five million, five hundred forty-three thousand, one hundred twenty-three".