40208145901 has 32 divisors (see below), whose sum is σ = 53316845568. Its totient is φ = 29355575040.

The previous prime is 40208145893. The next prime is 40208145917. The reversal of 40208145901 is 10954180204.

It is a happy number.

It is not a de Polignac number, because 40208145901 - 2³ = 40208145893 is a prime.

It is a super-2 number, since 2×40208145901² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40208145961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223036 + ... + 360778.

It is an arithmetic number, because the mean of its divisors is an integer number (1666151424).

Almost surely, 2^40208145901 is an apocalyptic number.

It is an amenable number.

40208145901 is a deficient number, since it is larger than the sum of its proper divisors (13108699667).

40208145901 is a wasteful number, since it uses less digits than its factorization.

40208145901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138001.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 40208145901 in words is "forty billion, two hundred eight million, one hundred forty-five thousand, nine hundred one".