35400781540 has 24 divisors (see below), whose sum is σ = 74595379320. Its totient is φ = 14111981568.

The previous prime is 35400781531. The next prime is 35400781543. The reversal of 35400781540 is 4518700453.

It can be written as a sum of positive squares in 4 ways, for example, as 2095991524 + 33304790016 = 45782^2 + 182496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 35400781540.

It is not an unprimeable number, because it can be changed into a prime (35400781543) 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, 3014685 + ... + 3026404.

It is an arithmetic number, because the mean of its divisors is an integer number (3108140805).

Almost surely, 2^35400781540 is an apocalyptic number.

It is an amenable number.

35400781540 is an abundant number, since it is smaller than the sum of its proper divisors (39194597780).

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

35400781540 is a wasteful number, since it uses less digits than its factorization.

35400781540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041391 (or 6041389 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 35400781540 in words is "thirty-five billion, four hundred million, seven hundred eighty-one thousand, five hundred forty".