10139950890 has 96 divisors (see below), whose sum is σ = 28397730816. Its totient is φ = 2502973440.

The previous prime is 10139950871. The next prime is 10139950897. The reversal of 10139950890 is 9805993101.

10139950890 is a `hidden beast` number, since 1 + 0 + 139 + 9 + 508 + 9 + 0 = 666.

It is a super-2 number, since 2×10139950890² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (10139950897) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14839 + ... + 143178.

It is an arithmetic number, because the mean of its divisors is an integer number (295809696).

Almost surely, 2^10139950890 is an apocalyptic number.

10139950890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10139950890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14198865408).

10139950890 is an abundant number, since it is smaller than the sum of its proper divisors (18257779926).

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

10139950890 is a wasteful number, since it uses less digits than its factorization.

10139950890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158084 (or 158081 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 10139950890 in words is "ten billion, one hundred thirty-nine million, nine hundred fifty thousand, eight hundred ninety".