1034402121551 has 4 divisors (see below), whose sum is σ = 1034405694504. Its totient is φ = 1034398548600.

The previous prime is 1034402121547. The next prime is 1034402121559. The reversal of 1034402121551 is 1551212044301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1034402121551 - 2² = 1034402121547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1034402121559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309820 + ... + 1945361.

It is an arithmetic number, because the mean of its divisors is an integer number (258601423626).

Almost surely, 2^{1034402121551} is an apocalyptic number.

1034402121551 is a deficient number, since it is larger than the sum of its proper divisors (3572953).

1034402121551 is an equidigital number, since it uses as much as digits as its factorization.

1034402121551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572952.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1034402121551 its reverse (1551212044301), we get a palindrome (2585614165852).

The spelling of 1034402121551 in words is "one trillion, thirty-four billion, four hundred two million, one hundred twenty-one thousand, five hundred fifty-one".