139069897850 has 48 divisors (see below), whose sum is σ = 279169965312. Its totient is φ = 51237869760.

The previous prime is 139069897783. The next prime is 139069897873. The reversal of 139069897850 is 58798960931.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69899 + ... + 532001.

It is an arithmetic number, because the mean of its divisors is an integer number (5816040944).

Almost surely, 2^139069897850 is an apocalyptic number.

139069897850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139069897850 is an abundant number, since it is smaller than the sum of its proper divisors (140100067462).

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

139069897850 is a wasteful number, since it uses less digits than its factorization.

139069897850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462591 (or 462586 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 65.

The spelling of 139069897850 in words is "one hundred thirty-nine billion, sixty-nine million, eight hundred ninety-seven thousand, eight hundred fifty".