145978144762 has 4 divisors (see below), whose sum is σ = 218967217146. Its totient is φ = 72989072380.

The previous prime is 145978144759. The next prime is 145978144771. The reversal of 145978144762 is 267441879541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 267441879541 = 281 ⋅951750461.

It can be written as a sum of positive squares in only one way, i.e., 126615700561 + 19362444201 = 355831^2 + 139149^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 145978144697 and 145978144706.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36494536189 + ... + 36494536192.

Almost surely, 2^145978144762 is an apocalyptic number.

145978144762 is a deficient number, since it is larger than the sum of its proper divisors (72989072384).

145978144762 is an equidigital number, since it uses as much as digits as its factorization.

145978144762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72989072383.

The product of its digits is 13547520, while the sum is 58.

The spelling of 145978144762 in words is "one hundred forty-five billion, nine hundred seventy-eight million, one hundred forty-four thousand, seven hundred sixty-two".