102740945890 has 32 divisors (see below), whose sum is σ = 201799454976. Its totient is φ = 37350418560.

The previous prime is 102740945869. The next prime is 102740945893. The reversal of 102740945890 is 98549047201.

It is not an unprimeable number, because it can be changed into a prime (102740945893) 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, 298374 + ... + 542686.

It is an arithmetic number, because the mean of its divisors is an integer number (6306232968).

Almost surely, 2^102740945890 is an apocalyptic number.

102740945890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102740945890 is a deficient number, since it is larger than the sum of its proper divisors (99058509086).

102740945890 is a wasteful number, since it uses less digits than its factorization.

102740945890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248154.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 102740945890 in words is "one hundred two billion, seven hundred forty million, nine hundred forty-five thousand, eight hundred ninety".