10951981404 has 144 divisors (see below), whose sum is σ = 31874830848. Its totient is φ = 2850097536.

The previous prime is 10951981373. The next prime is 10951981429. The reversal of 10951981404 is 40418915901.

It is a super-2 number, since 2×10951981404² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6814369 + ... + 6815975.

It is an arithmetic number, because the mean of its divisors is an integer number (221352992).

Almost surely, 2^10951981404 is an apocalyptic number.

10951981404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10951981404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15937415424).

10951981404 is an abundant number, since it is smaller than the sum of its proper divisors (20922849444).

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

10951981404 is a wasteful number, since it uses less digits than its factorization.

10951981404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1711 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 10951981404 in words is "ten billion, nine hundred fifty-one million, nine hundred eighty-one thousand, four hundred four".