1033978997923 has 4 divisors (see below), whose sum is σ = 1034367860680. Its totient is φ = 1033590135168.

The previous prime is 1033978997903. The next prime is 1033978997927. The reversal of 1033978997923 is 3297998793301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1033978997923 is a prime.

It is a super-2 number, since 2×1033978997923² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1033978997927) 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, 194427390 + ... + 194432707.

It is an arithmetic number, because the mean of its divisors is an integer number (258591965170).

Almost surely, 2^{1033978997923} is an apocalyptic number.

1033978997923 is a deficient number, since it is larger than the sum of its proper divisors (388862757).

1033978997923 is an equidigital number, since it uses as much as digits as its factorization.

1033978997923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388862756.

The product of its (nonzero) digits is 138883248, while the sum is 70.

The spelling of 1033978997923 in words is "one trillion, thirty-three billion, nine hundred seventy-eight million, nine hundred ninety-seven thousand, nine hundred twenty-three".