40401897459 has 24 divisors (see below), whose sum is σ = 67670400000. Its totient is φ = 20987997360.

The previous prime is 40401897427. The next prime is 40401897493. The reversal of 40401897459 is 95479810404.

It is not a de Polignac number, because 40401897459 - 2⁵ = 40401897427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40401897409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7947459 + ... + 7952540.

It is an arithmetic number, because the mean of its divisors is an integer number (2819600000).

Almost surely, 2^40401897459 is an apocalyptic number.

40401897459 is a deficient number, since it is larger than the sum of its proper divisors (27268502541).

40401897459 is a wasteful number, since it uses less digits than its factorization.

40401897459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15900031 (or 15900020 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 40401897459 in words is "forty billion, four hundred one million, eight hundred ninety-seven thousand, four hundred fifty-nine".