121903714639 has 12 divisors (see below), whose sum is σ = 149269855800. Its totient is φ = 98989481808.

The previous prime is 121903714637. The next prime is 121903714703. The reversal of 121903714639 is 936417309121.

It is not a de Polignac number, because 121903714639 - 2¹ = 121903714637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121903714633) 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, 65468304 + ... + 65470165.

It is an arithmetic number, because the mean of its divisors is an integer number (12439154650).

Almost surely, 2^121903714639 is an apocalyptic number.

121903714639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121903714639 is a deficient number, since it is larger than the sum of its proper divisors (27366141161).

121903714639 is a wasteful number, since it uses less digits than its factorization.

121903714639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130938502 (or 130938495 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 121903714639 in words is "one hundred twenty-one billion, nine hundred three million, seven hundred fourteen thousand, six hundred thirty-nine".