102139845435 has 96 divisors (see below), whose sum is σ = 191041763328. Its totient is φ = 50358147840.

The previous prime is 102139845433. The next prime is 102139845443. The reversal of 102139845435 is 534548931201.

102139845435 is a `hidden beast` number, since 1 + 0 + 2 + 13 + 98 + 4 + 543 + 5 = 666.

It is not a de Polignac number, because 102139845435 - 2¹ = 102139845433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (102139845433) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3661390 + ... + 3689180.

It is an arithmetic number, because the mean of its divisors is an integer number (1990018368).

Almost surely, 2^102139845435 is an apocalyptic number.

102139845435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102139845435 is a deficient number, since it is larger than the sum of its proper divisors (88901917893).

102139845435 is a wasteful number, since it uses less digits than its factorization.

102139845435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27945 (or 27942 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 102139845435 in words is "one hundred two billion, one hundred thirty-nine million, eight hundred forty-five thousand, four hundred thirty-five".