2001440497958 has 16 divisors (see below), whose sum is σ = 3276416416320. Its totient is φ = 909375690600.

The previous prime is 2001440497951. The next prime is 2001440497967. The reversal of 2001440497958 is 8597940441002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001440497951) 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, 18444188 + ... + 18552383.

It is an arithmetic number, because the mean of its divisors is an integer number (204776026020).

Almost surely, 2^{2001440497958} is an apocalyptic number.

2001440497958 is a deficient number, since it is larger than the sum of its proper divisors (1274975918362).

2001440497958 is a wasteful number, since it uses less digits than its factorization.

2001440497958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36999043.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 2001440497958 in words is "two trillion, one billion, four hundred forty million, four hundred ninety-seven thousand, nine hundred fifty-eight".