145413421994 has 16 divisors (see below), whose sum is σ = 222612429600. Its totient is φ = 71221404144.

The previous prime is 145413421987. The next prime is 145413422009. The reversal of 145413421994 is 499124314541.

It is a super-2 number, since 2×145413421994² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3007229 + ... + 3055200.

It is an arithmetic number, because the mean of its divisors is an integer number (13913276850).

Almost surely, 2^145413421994 is an apocalyptic number.

145413421994 is a deficient number, since it is larger than the sum of its proper divisors (77199007606).

145413421994 is a wasteful number, since it uses less digits than its factorization.

145413421994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6062677.

The product of its digits is 622080, while the sum is 47.

The spelling of 145413421994 in words is "one hundred forty-five billion, four hundred thirteen million, four hundred twenty-one thousand, nine hundred ninety-four".