75621354101 has 2 divisors, whose sum is σ = 75621354102. Its totient is φ = 75621354100.

The previous prime is 75621354049. The next prime is 75621354121. The reversal of 75621354101 is 10145312657.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74187595876 + 1433758225 = 272374^2 + 37865^2 .

It is a cyclic number.

It is not a de Polignac number, because 75621354101 - 2⁶ = 75621354037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75621354121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37810677050 + 37810677051.

It is an arithmetic number, because the mean of its divisors is an integer number (37810677051).

Almost surely, 2^75621354101 is an apocalyptic number.

It is an amenable number.

75621354101 is a deficient number, since it is larger than the sum of its proper divisors (1).

75621354101 is an equidigital number, since it uses as much as digits as its factorization.

75621354101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 75621354101 its reverse (10145312657), we get a palindrome (85766666758).

The spelling of 75621354101 in words is "seventy-five billion, six hundred twenty-one million, three hundred fifty-four thousand, one hundred one".