3753228991381 has 16 divisors (see below), whose sum is σ = 3865748290560. Its totient is φ = 3642419963520.

The previous prime is 3753228991339. The next prime is 3753228991459. The reversal of 3753228991381 is 1831998223573.

It is a cyclic number.

It is not a de Polignac number, because 3753228991381 - 2³³ = 3744639056789 is a prime.

It is a super-2 number, since 2×3753228991381² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3753228991331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6633876 + ... + 7177378.

It is an arithmetic number, because the mean of its divisors is an integer number (241609268160).

Almost surely, 2^{3753228991381} is an apocalyptic number.

It is an amenable number.

3753228991381 is a deficient number, since it is larger than the sum of its proper divisors (112519299179).

3753228991381 is a wasteful number, since it uses less digits than its factorization.

3753228991381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545076.

The product of its digits is 19595520, while the sum is 61.

The spelling of 3753228991381 in words is "three trillion, seven hundred fifty-three billion, two hundred twenty-eight million, nine hundred ninety-one thousand, three hundred eighty-one".