145774629881 has 2 divisors, whose sum is σ = 145774629882. Its totient is φ = 145774629880.

The previous prime is 145774629877. The next prime is 145774629883. The reversal of 145774629881 is 188926477541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81921888400 + 63852741481 = 286220^2 + 252691^2 .

It is a cyclic number.

It is not a de Polignac number, because 145774629881 - 2² = 145774629877 is a prime.

It is a super-2 number, since 2×145774629881² (a number of 23 digits) contains 22 as substring.

Together with 145774629883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145774629883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72887314940 + 72887314941.

It is an arithmetic number, because the mean of its divisors is an integer number (72887314941).

Almost surely, 2^145774629881 is an apocalyptic number.

It is an amenable number.

145774629881 is a deficient number, since it is larger than the sum of its proper divisors (1).

145774629881 is an equidigital number, since it uses as much as digits as its factorization.

145774629881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 62.

The spelling of 145774629881 in words is "one hundred forty-five billion, seven hundred seventy-four million, six hundred twenty-nine thousand, eight hundred eighty-one".