1011291912840 has 64 divisors (see below), whose sum is σ = 3309682628160. Its totient is φ = 245161675520.

The previous prime is 1011291912833. The next prime is 1011291912859. The reversal of 1011291912840 is 482191921101.

It is a super-2 number, since 2×1011291912840² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383063799 + ... + 383066438.

It is an arithmetic number, because the mean of its divisors is an integer number (51713791065).

Almost surely, 2^{1011291912840} is an apocalyptic number.

1011291912840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011291912840 is an abundant number, since it is smaller than the sum of its proper divisors (2298390715320).

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

1011291912840 is a wasteful number, since it uses less digits than its factorization.

1011291912840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766130262 (or 766130258 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 39.

The spelling of 1011291912840 in words is "one trillion, eleven billion, two hundred ninety-one million, nine hundred twelve thousand, eight hundred forty".