13357778890 has 16 divisors (see below), whose sum is σ = 24045327432. Its totient is φ = 5342817024.

The previous prime is 13357778881. The next prime is 13357778891. The reversal of 13357778890 is 9887775331.

It can be written as a sum of positive squares in 4 ways, for example, as 10432375321 + 2925403569 = 102139^2 + 54087^2 .

It is not an unprimeable number, because it can be changed into a prime (13357778891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303142 + ... + 344398.

Almost surely, 2^13357778890 is an apocalyptic number.

13357778890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13357778890 is a deficient number, since it is larger than the sum of its proper divisors (10687548542).

13357778890 is a wasteful number, since it uses less digits than its factorization.

13357778890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73641.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 13357778890 in words is "thirteen billion, three hundred fifty-seven million, seven hundred seventy-eight thousand, eight hundred ninety".