40145254073 has 2 divisors, whose sum is σ = 40145254074. Its totient is φ = 40145254072.

The previous prime is 40145254049. The next prime is 40145254141. The reversal of 40145254073 is 37045254104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29327590009 + 10817664064 = 171253^2 + 104008^2 .

It is a cyclic number.

It is not a de Polignac number, because 40145254073 - 2¹⁶ = 40145188537 is a prime.

It is a super-2 number, since 2×40145254073² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40145254013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072627036 + 20072627037.

It is an arithmetic number, because the mean of its divisors is an integer number (20072627037).

Almost surely, 2^40145254073 is an apocalyptic number.

It is an amenable number.

40145254073 is a deficient number, since it is larger than the sum of its proper divisors (1).

40145254073 is an equidigital number, since it uses as much as digits as its factorization.

40145254073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 40145254073 in words is "forty billion, one hundred forty-five million, two hundred fifty-four thousand, seventy-three".