40261396385 has 32 divisors (see below), whose sum is σ = 58842243072. Its totient is φ = 25845589440.

The previous prime is 40261396369. The next prime is 40261396421. The reversal of 40261396385 is 58369316204.

40261396385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40261396385 - 2⁴ = 40261396369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 494231 + ... + 569900.

It is an arithmetic number, because the mean of its divisors is an integer number (1838820096).

Almost surely, 2^40261396385 is an apocalyptic number.

It is an amenable number.

40261396385 is a deficient number, since it is larger than the sum of its proper divisors (18580846687).

40261396385 is a wasteful number, since it uses less digits than its factorization.

40261396385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064213.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 40261396385 in words is "forty billion, two hundred sixty-one million, three hundred ninety-six thousand, three hundred eighty-five".