40451154012 has 18 divisors (see below), whose sum is σ = 102251528288. Its totient is φ = 13483717992.

The previous prime is 40451154001. The next prime is 40451154031. The reversal of 40451154012 is 21045115404.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×40451154012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561821548 + ... + 561821619.

Almost surely, 2^40451154012 is an apocalyptic number.

It is an amenable number.

40451154012 is an abundant number, since it is smaller than the sum of its proper divisors (61800374276).

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

40451154012 is a wasteful number, since it uses less digits than its factorization.

40451154012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123643177 (or 1123643172 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 40451154012 its reverse (21045115404), we get a palindrome (61496269416).

The spelling of 40451154012 in words is "forty billion, four hundred fifty-one million, one hundred fifty-four thousand, twelve".