102011999994 has 64 divisors (see below), whose sum is σ = 240076673280. Its totient is φ = 31997306880.

The previous prime is 102011999993. The next prime is 102012000019. The reversal of 102011999994 is 499999110201.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 102011999994.

It is not an unprimeable number, because it can be changed into a prime (102011999993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6779259 + ... + 6794289.

It is an arithmetic number, because the mean of its divisors is an integer number (3751198020).

Almost surely, 2^102011999994 is an apocalyptic number.

102011999994 is an abundant number, since it is smaller than the sum of its proper divisors (138064673286).

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

102011999994 is a wasteful number, since it uses less digits than its factorization.

102011999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22452 (or 22446 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The spelling of 102011999994 in words is "one hundred two billion, eleven million, nine hundred ninety-nine thousand, nine hundred ninety-four".