1011261400530 has 16 divisors (see below), whose sum is σ = 2427027361344. Its totient is φ = 269669706800.

The previous prime is 1011261400489. The next prime is 1011261400543. The reversal of 1011261400530 is 350041621101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011261400530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16854356646 + ... + 16854356705.

It is an arithmetic number, because the mean of its divisors is an integer number (151689210084).

Almost surely, 2^{1011261400530} is an apocalyptic number.

1011261400530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011261400530 is an abundant number, since it is smaller than the sum of its proper divisors (1415765960814).

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

1011261400530 is a wasteful number, since it uses less digits than its factorization.

1011261400530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33708713361.

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 1011261400530 in words is "one trillion, eleven billion, two hundred sixty-one million, four hundred thousand, five hundred thirty".