102640206396 has 48 divisors (see below), whose sum is σ = 294761621504. Its totient is φ = 27069944256.

The previous prime is 102640206391. The next prime is 102640206437. The reversal of 102640206396 is 693602046201.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102640206391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46995340 + ... + 46997523.

Almost surely, 2^102640206396 is an apocalyptic number.

It is an amenable number.

102640206396 is an abundant number, since it is smaller than the sum of its proper divisors (192121415108).

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

102640206396 is a wasteful number, since it uses less digits than its factorization.

102640206396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93992890 (or 93992888 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 102640206396 in words is "one hundred two billion, six hundred forty million, two hundred six thousand, three hundred ninety-six".