2151354440042 has 8 divisors (see below), whose sum is σ = 3227050924416. Its totient is φ = 1075670798572.

The previous prime is 2151354440023. The next prime is 2151354440149. The reversal of 2151354440042 is 2400444531512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2151354439984 and 2151354440011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780408 + ... + 3468915.

It is an arithmetic number, because the mean of its divisors is an integer number (403381365552).

Almost surely, 2^{2151354440042} is an apocalyptic number.

2151354440042 is a deficient number, since it is larger than the sum of its proper divisors (1075696484374).

2151354440042 is a wasteful number, since it uses less digits than its factorization.

2151354440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421452.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 2151354440042 its reverse (2400444531512), we get a palindrome (4551798971554).

The spelling of 2151354440042 in words is "two trillion, one hundred fifty-one billion, three hundred fifty-four million, four hundred forty thousand, forty-two".