115218725890 has 16 divisors (see below), whose sum is σ = 207399057408. Its totient is φ = 46086301296.

The previous prime is 115218725863. The next prime is 115218725917. The reversal of 115218725890 is 98527812511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115218725863) and next prime (115218725917).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332509 + ... + 583951.

It is an arithmetic number, because the mean of its divisors is an integer number (12962441088).

Almost surely, 2^115218725890 is an apocalyptic number.

115218725890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115218725890 is a deficient number, since it is larger than the sum of its proper divisors (92180331518).

115218725890 is a wasteful number, since it uses less digits than its factorization.

115218725890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297273.

The product of its (nonzero) digits is 403200, while the sum is 49.

The spelling of 115218725890 in words is "one hundred fifteen billion, two hundred eighteen million, seven hundred twenty-five thousand, eight hundred ninety".